医学英语(阅读一分册)翻译及答案
Chapter 1
Passage 1 Human Body
In this passage you will learn:
1. Classification of organ systems
2. Structure and function of each organ system
3. Associated medical terms
To understand the human body it is necessary to understand how its parts are put together and how they function. The study of the body's structure is called anatomy; the study of the body's function is known as physiology. Other studies of human body include biology, cytology, embryology, histology, endocrinology, hematology, immunology, psychology etc.
了解人体各部分的组成及其功能，对于认识人体是必需的。研究人体结构的科学叫解剖学；研究人体功能的科学叫生理学。其他研究人体的科学包括生物学、细胞学、胚胎学、组织学、内分泌学、血液学、遗传学、免疫学、心理学等等。
Anatomists find it useful to divide the human body into ten systems, that is, the skeletal system, the muscular system, the circulatory system, the respiratory system, the digestive system, the urinary system, the endocrine system, the nervous system, the reproductive system and the skin. The principal parts of each of these systems are described in this article.
解剖学家发现把整个人体分成骨骼、肌肉、循环、呼吸、消化、泌尿、内分泌、神经、生殖系统以及感觉器官的做法是很有帮助的。本文描绘并阐述了各系统的主要部分。
The skeletal system is made of bones, joints between bones, and cartilage. Its function is to provide support and protection for the soft tissues and the organs of the body and to provide points of attachment for the muscles that move the body. There are 206 bones in the human skeleton. They have various shapes - long, short, cube - shaped, flat, and irregular. Many of the long bones have an interior space that is filled with bone marrow, where blood cells are made.
骨骼系统由骨、关节以及软骨组成。它对软组织及人体器官起到支持和保护作用，并牵动骨胳肌，引起各种运动。人体有206 根骨头。骨形态不一，有长的、短、立方的、扁的及不规则的。许多长骨里有一个内层间隙，里面充填着骨髓，这即是血细胞的制造场所。
A joint is where bones are joined together. The connection can be so close that no movement is possible, as is the case in the skull. Other kinds of joints permit movement: either back and forth in one plane - as with the hinge joint of the elbow - or movement around a single axis - as with the pivot joint that permits the head to rotate. A wide range of movement is possible when the ball - shaped end of one bone fits into a socket at the end of another bone, as they do in the shoulder and hip joints.
关节把骨与骨连接起来。颅骨不能运动，是由于骨与骨之间的连接太紧密。但其它的关节可允许活动，如一个平面上的前后屈伸运动，如肘关节；或是绕轴心旋转运动，如枢轴点允许头部转动。如果一根骨的球形末端插入另一根骨的臼槽里，大辐度的运动（如肩关节、髋关节）即成为可能。
Cartilage is a more flexible material than bone. It serves as a protective, cushioning layer where bones come together. It also connects the ribs to the breastbone and provides a structural base for the nose and the external ear. An infant's skeleton is made of cartilage that is gradually replaced by bone as the infant grows into an adult.
软骨是一种比一般骨更具韧性的物质。它是骨连结的保护、缓冲层。它把肋骨与胸骨连结起来，也是鼻腔与内耳的结构基础。一个婴儿的骨骼就是由软骨组成，然后不断生长、骨化，使婴儿长
大成人。
The muscular system allows the body to move, and its contractions produce heat, which helps maintain a constant body temperature. Striated muscles can be consciously controlled. The ends of these muscles are attached to different bones by connective tissue bands so that when the muscle contracts, one bone moves in relation to the other. This makes it possible to move the whole body, as when walking, or to move just one part of the body, as when bending a finger. Contractions of the heart and smooth muscles are not under conscious control. Smooth muscles are found in the walls of organs such as the stomach and the intestines and serve to move the contents of these organs through the body. 肌肉系统使躯体运动，肌肉收缩产生的热有助于维持一个恒定的体温。人体能够有意识地控制条纹肌。结缔组织使肌肉末端附着于不同的骨面上，所以当肌肉收缩时，两骨彼此靠近而产生运动。这也就使整个人体可以运动起来，如走路，运动躯体某个部位，如弯曲手指。心脏收缩和平滑肌收缩就不是被意识所控制的。器官
壁内层的平滑肌，如胃肠壁的平滑肌把胃肠中的物质运送到全身。
The circulatory system. All parts of the body must have nourishment and oxygen in order to function and grow, and their waste products must be removed before they accumulate and poison the body. The circulatory system distributes needed materials and removes unneeded ones. It is made up of the heart, blood vessels, and blood, which together make up the cardiovascular system. The blood is also part of the body's defense system. It has antibodies and white blood cells that protect the body against foreign invaders. 循环系统：机体的所有部分需要营养物质和氧气来使之发挥功能和生长，也需要在这些器官所产生的废物积聚而危害生命之前将其排除。循环系统运送有用物质，
排泄废物。心血管系统是循环系统的组成之一；心血管系统包括心脏、血管及血液。血液也是机体防御系统的一个部分，血液中有抗体及白细胞来防止机体受到外来的侵袭。
The heart is a muscle that is divided into two nearly identical halves: one half receives blood from the lungs and sends it to the rest of the body, the other half sends blood that has traveled through the body back to the lungs. When the heart muscle contracts, the blood is forced out into arteries and enters small capillaries. Blood returns to the heart through veins. 心脏是一块
被分为几乎对等两半的肌肉。一半吸收来自肺部的血液，并将血液运送到机体的其余部位，另一半使流经全身的血液回流人肺。心脏收缩时，动脉把全身血液输送到毛细血管。静脉输送血液返回心脏。
Also functioning in circulation is the lymphatic system. Some of the fluid that surrounds cells does not reenter the blood vessels directly. This fluid, called lymph, returns to the heart by way of another system of channels - the lymph vessels. Lymph nodes along these vessels filter the fluid before it reenters the blood. The spleen is a large lymphatic organ that filters the blood. 淋
巴系统也是循环系统的一个组成部分。一些细胞周围的体液不是直接回流入血管通道，这种体液叫淋巴液，它是流经另一个管道系统——淋巴管而回流人心脏。沿淋巴管的淋巴结将淋巴液过滤，过滤后再回流人血液。脾是一个过滤血液的大淋巴器官。
The respiratory system takes in oxygen from the air and expels carbon dioxide and water vapor. Air enters the nose and mouth and travels through the larynx, and trachea. The trachea divides to enter each of the two lungs and then divides more than 20 times to form a very large number of small air spaces. Oxygen from the air enters the blood through capillaries in the walls of these air spaces, and the blood release carbon dioxide into the air spaces to be exhaled. 呼吸系统从空气中摄取氧气，并将二氧化碳、水蒸气排出体外。空气经鼻腔、口腔人喉管、气管。气管分成左右支气管，各连结左右肺，左右支气管再分枝20 多次，在终端形成大量微小的肺泡。从空气摄取的氧气流
经这些肺泡壁内的毛细血管流入血液，血液再经肺泡把释放出的二氧化碳排出体外。
The digestive system consists of a tube extending from the mouth to the anus. In it, food and fluids are taken in, moved through the body, and broken down into small molecules that are absorbed into the circulatory system. This breakdown, known as digestion, is both a mechanical and a chemical process .消化系统是一个从口腔直到肛门的管道。食物和液体在消化道里被吸收，在肠道里移动时，被分解成小分子物质后再进入循环系统。这种分解，即消化，是一个机械过程，也是一个化学过程。
Food enters through the mouth, where chewing and saliva start to break it up and make it easier to swallow. Next, the food travels down through the esophagus to the stomach. Contractions of the stomach's muscular wall continue to break down the food mechanically, and chemical digestion continues when acid and enzymes are secreted into the stomach cavity. 食物进入口腔里，咀嚼和唾液开始将食物粉碎，使之便于吞咽。接着，食物经食管人胃。胃肌壁的收缩继续机械化地分解食物，而当酸和酶分泌入胃腔时，化学性消化开始。
The liquified food gradually passes into the small intestine. In the first part of the small intestine, called the duodenum, enzymes from the pancreas are added. These enzymes complete the chemical breakdown of the food. The digestion of fat is aided by bile, which is made in the liver and stored in the gall bladder. The small intestine of an adult is about 21 feet (6.4 meters) long. Most of its length is devoted to absorbing the nutrients released during these digestive activities. 液体化食物逐渐进入小肠。小肠的起始部分叫十二指肠，胰腺分泌的酶辅助食物消化。这些酶完成食物的化学分解。肝脏分泌的胆汁贮存在胆囊内，胆汁有助于脂肪消化。一个成年人的小肠有21 英尺(6.4米)长。小肠的大部分肠段用来吸收消化过程中释放的营养物质。
The liquid remainder of the food enters the large intestine, or colon, which is about 12 feet (3.7 meters) long. It is more than twice as wide as the small intestine. In the large intestine most of the fluid is absorbed, and the relatively dry residues are expelled. 液状的剩余食物进入大肠，或结肠，它大约有12 英尺( 3.7 米)长。大肠是小肠的两倍多宽。大部分液体在大肠内被吸收，相对干化的残余物被排出体外。
The urinary system maintains normal levels of water and of certain small molecules such as sodium and potassium in the body. It does this by passing blood through the kidneys, two efficient filtering organs that get rid of any excess of various molecules and conserve those molecules that are in short supply. 泌尿系统维持水分及体内某些小分子物质，如钠、钾的正常水平。身体是通过让 '肾过滤血液来做到这一点的。肾是两个有效的过滤器官，它滤出各种多余的小分子物质，保留那些供应不足的小分子物质。
The fluid that leaves the kidneys, known as urine, travels through a tube called the ureter to the bladder. The bladder holds the urine until it is voided from the body through another tube, the urethra. 从肾流出的液体，即尿，通过输尿管人膀胱。膀胱起贮存尿液的作用，直到尿经膀胱另一端的管道排出。
The endocrine system. The two systems that control body activities are the endocrine system and the nervous system. The former exerts its control by means of chemical messengers called hormones. Hormones are produced by a variety of endocrine glands, which release the hormones directly into the blood stream. 内分泌系统。内分泌和神经是调控机体活动的两个系统，前者依靠其化学信使——激素发挥作用。激素是由各种内分泌腺体制造，并直接被释放入血流
A major gland is the pituitary, which is located under the brain in the middle of the head. It produces at least eight hormones, which affect growth, kidney function, and development of the sex organs. Because some of the pituitary's hormones stimulate other glands to produce their own hormones, the pituitary called the master gland. 脑垂体是一个主要腺体，它位于头中部
脑下方。它至少分泌八种激素，这些激素对人体生长、肝功能及性器官发育有影响。因为脑垂体分
泌的一些激素促进其他腺体分泌激素，所以脑垂体是主要腺体。
Another gland, the thyroid, is located between the collar bones. Its hormone controls the rate of the body's metabolism. The sex organs (ovaries end testes) make the sex cells and also make hormones that control certain characteristics of males and females. Located on top of each kidney is the adrenal gland, which produces cortisone and adrenaline. The pancreas produces not only digestive enzymes but also 3 insulin and glucagon, which control the body's use of sugar and starches. 另一个腺体，甲状腺，位于锁骨之间。甲状腺激素调控着机体新陈代谢的速度。性器官(卵巢、睾丸)分泌性细胞和性激素，这些激素控制着男性和女性的某些特征。每边肾上方是肾上腺，它分泌可的松和肾上腺激素。胰腺不仅分泌消化酶，而且分泌胰岛素和高血糖素，这两种激素控制机体的糖分及淀粉的消耗。
The nervous system. The brain, the spinal cord and the nerve - also controls body activities. The lower parts of the brain control basic functions such as breathing and heart rate as well as body temperature, hunger, and thirst. Above these regions are the centers for sight, sound, touch, smell, and taste, and the regions that direct voluntary muscular activities of the arms and legs. Performed here are the higher functions of integrating and processing information. 神经系统——脑、脊髓及神经，也调控机体活动。脑的偏下部位控制着诸如呼吸、心跳、体温、饥渴的基本活动。而脑的偏上部位则是视觉、听觉、触觉、嗅觉及味觉中心，也是指挥臂、腿随意肌肉运动的区域。神经系统更高级的功能是整合、处理信息。
The brain receives and sends information by means of nerves, many of which lie partly in the spinal cord. The spinal cord is protected by the spinal column. Nerves enter and leave the spinal cord at each level of the body, traveling to and from the arms, legs, and trunk. These nerves bring information from the various sense organs. The information is processed by the brain, and then messages are carried back to muscles and glands through out the body. 脑通过神经收集并传送信息，许多神经部分地分布在脊髓里。脊髓由脊柱保护。在机体每一级，神经传人、传出脊髓，往返于臂、腿、躯体。这些神经输送来自各种感觉器官的信息。信息经脑处理后输送回全身及腺体The reproductive system is constructed differently for males and females. The male reproductive system is responsible for producing, transporting and maintaining viable sperm (the male sex cell). It also produces the male sex hormone, testosterone, which regulates the development of a beard, pubic hair, a deep voice and other bodily characteristics of the adult male. 男、女性的生殖系统不同。男性生殖系统产生、输送、维持能存活的精子(男性性细胞)。它也分泌男性激素、睾酮，以此调节胡须、阴毛、深沉嗓音极其他成年男子身体发育的特征。
The female productive system is responsible for producing and transporting ova (the female sex cells), eliminating ova from the body when they are not fertilized by sperm, nourishing and providing a place for growth of an embryo when an ovum is fertilized by sperm, and nourishing a newborn child. The female reproductive system also produces the female sex hormones, estrogen and progesterone, which regulate the development of breasts and other bodily characteristics of the mature female. 女性生殖系统产生、输送卵子 (女性性细胞) ，将未受精的卵子排出体外，而当精、卵结合时，女性生殖系统培养、提供胚胎生长场所，并孕育新生
The skin is a complete layer that protects the inner structures of the body, and it is the largest of the body's organs. It keeps out foreign substances and prevents excessive water evaporation. The nerves in the skin provide tactile information. The skin also helps keep the body's temperature close to 37 ° C, heat is conserved by reducing blood flow through the skin or is expended by increasing blood flow and by evaporation of sweat from the skin. Hair and nails are accessory
structures of the skin. 皮肤是保护肌体内层结构的完整层， 也是机体的最大器官。 皮肤防御外来侵袭， 防止过多水分蒸发。 皮肤上的神经提供触觉信息。 皮肤也能将体温维持 到 98.6 华氏度（约 37 摄氏度）。通过皮肤的血流量降低时，热量就被储存起来，通过皮肤 的血流增加及汗液蒸发时，热量就散发。头发及指甲是皮肤的附属结构。
Cells and Tissues 细胞与组织 In this passage, you will learn:1.Human body systems as
a whole 2.Vital parts of a cell 3.Four kinds of tissues
Cells are organized into tissues, and tissues are arranged into organs, which in turn are grouped into systems. Each body system serves its specific functions. Bear in mind however that the body functions as a whole no system is
independent of the others. They work together to
maintain the body ' s state of internal stability, termed homeostasis. Now let ' s begin our dis with cells, the smallest unit of living matter that can exist by itself. 细胞构成组织，组织构成器 官，器官又进一步构成系统。人体的每个系统都有其特定功能，但是，请记住这里
:机体是 作为一个整体来发挥作用的， 没有哪个系统能够独立于其他系统而存在， 是整体系统共同作 用保持了机体内部的稳定状态，即体内平衡。现在，我们先讨论细胞
Y 能独立存在活性物质 的最小单位。
The body can be studied from its simplest to its most complex level, beginning with the cell. All body functions result
from the activities of billions of the specialized cells. Some plants and animals consist of only a single cell. Others are
composed of many billions of cells. 从细胞开始， 我们能够从最简单到最复杂的水平来研究机体。 所有人体的功能都来自亿万个特定细胞活动， 有的动植物仅由一个细胞构成，其他生物则由亿万个细胞构成。
Cells exist in a variety of shapes and sizes. They may, for example, be cube -shaped or flat. Scientists who study
cells have determined that a single cell may be as large as a tennis ball or so small that thousands would fit on the point of a needle. The yolk of a hen
' s egg is actually a large cell. By contrast, bacteria --- each one of which is a tiny cell ----- are among the smallest cells.
Regardless of its shape or size, every cell contains the “ machinery ” needed to maintain life. W normally cells function with great efficiency, they are subject to various disorders that result in disease. 细胞有很多种形状和大小。列如：有可能是立方形或扁形的。科学家的研究发现单 独一个细胞可以像网球一样的大小， 或小到几千个细胞才能刚好填满针头。 鸡的蛋黄是一个 非常大的单细胞。 微小的细菌呢算是最小的细胞。 不管是细胞大小或形状的不同， 每个细胞 都有“需要存活的机制 ”。对每个正常的细胞， 有效力的细胞， 都存在许多问题， 能导致疾病。
The size of cells is usually measured in microns. A micron is a millionth of a meter, and about 25,000 microns equal
one inch. The smallest bacteria are about 0.2 micron in diameter. The average cell in the human body about ten microns
in diameter ----------------------------------is a speck barely visible
without the aid of a microscope. 细胞的大小是以 “微米”为长度单位。微米是一米的一百万分 之一， 25000 微米等于一寸。最小的细菌的圆径是 0.2 微米。人体正常细胞的评价圆径约十
微米，肉眼勉强可以看得到，不需要显微镜的帮助。
The study of cells is the branch of biology called cytology. The science that deals with cells on the smallest structural and functional level is called molecular biology. 研究关于 “细胞 ”是生 物学的分支，成为细胞生物学。 在最微小水平针对细胞的结构及功能的研究成为分子生物学。
儿。女性生殖系统也分泌女性性激素 发育的特征。
雌激素和孕酮， 以此调节乳房及其他成熟女性身体
All cells consist of protoplasm, the “ living jelly. ” The protoplasm of a typical cell forms three vital parts --- the cell membrane, the cytoplasm, and the nucleus. The membrane encloses the
other cell structures. Much of the chemical work of the cell is done in the cytoplasm, which surrounds the nucleus. The nucleus, enclosed by its own membrane, is the control center of the cell. (see Figure 1-1) 所有细胞都是以“原生质”，又称“生命胶质”所形成的。典型细胞的原生质形成了三个重要部分，细胞膜、细胞质和细胞核。细胞膜圈住了细胞的其他结构。大部分的化学反应都在细胞核周围，细胞质完成的。被自己的膜包围的细胞核是细胞的控制中心。the cells Membrane 细胞膜
Cells can survive only in a liquid medium that brings in food and carries away waste. For one-celled organisms this fluid is an external body of water the ocean, a lake, or a stream. For many-celled plants and animals, however, the medium is part of the organism ----------------------------------------------------------------------- in plants, the
sap; in animals, the blood. 细胞只能存活在能供养分又能排除废物的液体媒介中。对单细胞生物来说，这就是细胞外的液体，如：大海里、河里或水流中。在对多细胞生物而言，这种媒介就是生物体的一部分，植物以汁液的形式，动物以血液的形式。
The cell membrane is semipermeable, or differentially permeable --------- s ome substances can
pass through it, but others cannot. This characteristic enables the cell to admit useful substances and to reject harmful substances from the surrounding fluid as well as to force out, or excrete waste products into the fluid. 细胞膜是半渗透性或区别性的渗透膜，即某些物质能渗透。这个特殊性使细胞对细胞周围只吸收了需要的物质而排除掉有害的物质，包括细胞内的废物通过液体化后排出细胞外。
The cell membrane is an extremely thin but tough band of protein and phospholipid molecules. Phospholipids are chemicals similar to stored fat. On the evidence of electron micrographs, biologists believe that it has pores through which certain small molecules pass intact. Substances probably pass through the cell membrane in several ways. Small chambers located on the cell membrane called caveolae gather chemical signals and channel them into the cells. The caveolae may also help distribute proteins throughout the cell. Large molecules enter the cell by a process called diffusion, in which they may be dissolved by substances in the cell membrane. They can then through the membrane without difficulty. Some cells take in large molecules by means of pinocytosis. In this process, the cell membrane forms a pocket around large molecules floating against it. The molecule -and-fluid -filled pocket then breads loose from the membrane to become a bubblelike vacuole, and the vacuole then drifts into the cytoplasm. Finally, the vacuole wall breaks up and the molecules are released into the cytoplasm. 细胞膜是一种非常薄但确以很坚固的蛋白磷脂膜形成。磷脂是一种类似于储存的脂肪的蛋白物质。通过电子显微镜，生物学家相信细胞膜有孔，使较小的物质完全可以通过。物质可通过多种方式从细胞膜进入。细胞膜上的结构，称“小穴”，可接受化学信号再传到细胞内。小穴还可能参于细胞蛋白的分配。大的分子可通过“渗滤”进入细胞内，或被细胞膜内体分解，使它们更容易的进入细胞内。有些细胞可通过“胞饮”方式吞饮较大的物质。这个过程是通过细胞膜在大物质形成了“带”把它包围着，将它以泡状的“液泡”引入细胞质，最后包围解散，大物质成功的进入细胞内。
The cytoplasm 细胞质
The cytoplasm is mainly water. Its water content varies from a minimum of about 65 percent to a maximum of about 95 percent. The solids in the cytoplasm include granular proteins, carbohydrates, droplets of fat, and pigments. The cytoplasm is thus a colloidal system. 细胞质主要成分是“水”。水分含量有百分之65 到最高，百分之95。细胞质内的固体包括蛋白颗粒、碳水化合物、脂肪小滴和色素。细胞质是胶体性的。
The cytoplasm may be either watery or syrupy, depending on the concentration of solids dispersed in the fluid. When the solid content decreases, these structures seem to vanish. Changes in concentration also produce an apparent steaming of the cytoplasm from place to place within the cell. This occurs, for example, when food molecules enter the cell.
细胞质可能
是水性或糖浆性，根据散在细胞质内固体的浓度。当固体成分浓度增多，膜状和纤维状结果在细胞质显出。而当固体
成分浓度减少时，膜状和纤维状的结构就消失。浓度的变化还可以表现细胞质内局部流动的变化。食物分子进入时可见。
Most of the cell ' s constant work of keeping alive is performed in the cytoplasm. Here food
molecules are changed into the material needed for energy and materials for growth or stiffening of the cell membrane are manufactures needed by the rest of the organism. For example, plant cells containing chlorophyll manufacture glucose a plant food -------------------------------------------------------- f rom carbon dioxide and water.
大部分为了细胞存活的工作都在此处 (细胞质)完成的。在此处，食物物质将被转化成提供细胞能量的材料和提供细胞生长的材料，或细胞膜的增强剂所生产。多细胞植物的细胞质还是生产了对其他生物提供食物的物质。列如：植物叶绿素所产生的葡萄糖，植物的食物，从水和二氧化碳合成。
's key energy transactions occurs in the sa-usshaagpeed mitochondria.
One of the cytoplasm
Each mitochondrion has an inner and an outer membrane. Like the cell membrane, the
membranes of the mitochondrion are semipermeable. Food molecules that pass into the cytoplasm are taken into the mitochondria and oxidized, or burned, for energy. 细胞质能量转换
的要点发生在锥状形的线粒体。每个线粒体都有内膜和外膜。像细胞膜一样，线粒体的膜也是半渗透性。进入线粒体的食物分子被氧化提供出能量。
The endoplasmic reticulum, a network of membranous tubes, runs through the cytoplasm. In the opinion of some biologists, this network is a continuous structure that begins at the cell membrane, twists through the cytoplasm, and ends at the membrane surrounding the nucleus. Located along the endoplasmic reticulum as well as elsewhere in the cytoplasm are numerous ribosomes. These tiny granules consist in part of ribonucleic acid (RNA). Proteins are manufactured at the ribosomes. The Golgi complex, or Golgi apparatus, is a membranous structure composed of stacks of thin sacs. Newly made proteins move from the endoplasmic reticulum to the Golgi complex, where they are stored for later secretion. 胞浆网，在细胞质中
由膜所形成管状的网。有些生物学家认为这是一种连续性结构，始点为细胞膜，在细胞膜内扭绞，终点为细胞核的膜。分布于胞浆网包括细胞质中某处的是核糖体。这些小颗粒是核糖核酸所形成的。蛋白质是在核糖体合成的。高尔基体是膜状囊包堆成层形成的。新合成的蛋白从胞浆网移动到高尔基体储存，为了后来分泌所用。
Vacuoles drift through the cytoplasm and usually carry food molecules in solution. Lysosomes are structures somewhat similar in appearance to vacuoles but denser. They appear to have a digestive function. Each lysosome is filled with digestive enzymes and encased in a membrane. Lysosomes are believed to break down food substances brought into the cell by pinocytosis. It has been suggested that the Golgi complex plays a part in the formation of lysosomes. 在细胞质内游动的液泡一般是带着食物分子的溶液。溶酶体是一种有点像液泡的结构，但较稠。它是用来消化的。每个溶酶体的膜内都是添装着消化酶。我们认为它是消化通过“胞饮”方式的大物质。也认为高尔基体对溶酶体的形成有关系。
The Nucleus 细胞核
Near the center of the cell is a roundish or oval -shaped nucleus. The nucleus controls the growth and division of the cell. It also contains the structures that transmit hereditary traits. 细胞的中央，圆形或椭圆形的就是细胞核。细胞核控制细胞的生长和分化。也装着遗传信息。
Enclosed by a two -layered membrane, the nucleus contains a liquid called nucleoplasm as well as strands of deoxyribonucleic acid (DNA) covered with a coating of protein. A strand of DNA consists of a long series of genes, which are the units of heredity of plants and animals. Genes determine the characteristics of a cell. They do this by regulating the production of RNA, which in turn controls the manufacture of specific proteins. 被两层膜圈住着，细胞核内含有称为“核质(浆) ”的液体和脱氧核糖核酸的蛋白层。脱氧核糖核酸缕是很长的基因系列所组成的，它是植物和动物的遗传信息。基因决定了细胞的特征。它是通过调节核糖核酸，使核糖核酸产出特异的蛋白。
Human cells, for example, make only proteins unique to human beings DNA strands are usually too thinly strung out
(完整版)医学专业英语翻译及答案
Chapter 1 Passage 1 Human Body In this passage you will learn: 1. Classification of organ systems 2. Structure and function of each organ system 3. Associated medical terms To understand the human body it is necessary to understand how its parts are put together and how they function. The study of the body's structure is called anatomy; the study of the body's function is known as physiology. Other studies of human body include biology, cytology, embryology, histology, endocrinology, hematology, immunology, psychology etc. 了解人体各部分的组成及其功能，对于认识人体是必需的。研究人体结构的科学叫解剖学；研究人体功能的科学叫生理学。其他研究人体的科学包括生物学、细胞学、胚胎学、组织学、内分泌学、血液学、遗传学、免疫学、心理学等等。 Anatomists find it useful to divide the human body into ten systems, that is, the skeletal system, the muscular system, the circulatory system, the respiratory system, the digestive system, the urinary system, the endocrine system, the nervous system, the reproductive system and the skin. The principal parts of each of these systems are described in this article. 解剖学家发现把整个人体分成骨骼、肌肉、循环、呼吸、消化、泌尿、内分泌、神经、生殖系统以及感觉器官的做法是很有帮助的。本文描绘并阐述了各系统的主要部分。 The skeletal system is made of bones, joints between bones, and cartilage. Its function is to provide support and protection for the soft tissues and the organs of the body and to provide points of attachment for the muscles that move the body. There are 206 bones in the human skeleton. They have various shapes - long, short, cube - shaped, flat, and irregular. Many of the long bones have an interior space that is filled with bone marrow, where blood cells are made. 骨骼系统由骨、关节以及软骨组成。它对软组织及人体器官起到支持和保护作用，并牵动骨胳肌，引起各种运动。人体有206根骨头。骨形态不一，有长的、短、立方的、扁的及不规则的。许多长骨里有一个内层间隙，里面充填着骨髓，这即是血细胞的制造场所。 A joint is where bones are joined together. The connection can be so close that no movement is possible, as is the case in the skull. Other kinds of joints permit movement: either back and forth in one plane - as with the hinge joint of the elbow - or movement around a single axis - as with the pivot joint that permits the head to rotate. A wide range of movement is possible when the ball - shaped end of one bone fits into a socket at the end of another bone, as they do in the shoulder and hip joints. 关节把骨与骨连接起来。颅骨不能运动，是由于骨与骨之间的连接太紧密。但其它的关节可允许活动，如一个平面上的前后屈伸运动，如肘关节；或是绕轴心旋转运动，如枢轴点允许头部转动。如果一根骨的球形末端插入另一根骨的臼槽里，大辐度的运动（如肩关节、髋关节）即成为可能。 Cartilage is a more flexible material than bone. It serves as a protective, cushioning layer where bones come together. It also connects the ribs to the breastbone and provides a structural base for the nose and the external ear. An infant's skeleton is made of cartilage that is gradually replaced by bone as the infant grows into an adult. 软骨是一种比一般骨更具韧性的物质。它是骨连结的保护、缓冲层。它把肋骨与胸骨连结起来，也是鼻腔与内耳的结构基础。一个婴儿的骨骼就是由软骨组成，然后不断生长、
英语阅读理解带翻译10篇精选
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英语阅读理解及翻译
1.A strange thing happens to nearly everybody at night(英语阅读理解) A strange thing happens to nearly everybody at night. They turn off the lights, pull up the covers and close their eyes. Six or seven sleeping hours later, they wake up again. Strange, isn't it? 一个奇怪的事情发生在几乎每个人身上，并且都在晚上。他们关上灯，拉上了窗帘和闭上他们的眼睛。六或七小时的睡眠后，他们再次醒来。奇怪，不是吗？ Sleep is a great puzzle. Scientists and doctors would like to talk about why one can't fall asleep. They are not so sure what causes sleep. 睡眠是一个伟大的谜。科学家和医生谈谈为什么不能入睡。他们不知道什么是睡眠的原因。 You will sleep best both when you are in good health and when you don't eat too much or too little. No worries and a comfortable place to sleep are important, too.你会睡得最好当你身体健康时，你不要吃太多或太少。不用担心，一个舒适的睡眠环境是重要的。 Strange things happen during sleep. For example, you often move. You would feel tired ever if you didn't move. You also dream. Part of your brain is still awake when you dream. Dreaming happens when the memory and imagination parts of your brain are still awake. 奇怪的事情发生在睡眠期间。例如，你经常搬家。你会觉得累，如果你没有动。你也做梦。你大脑的一部分仍然是清醒的时候，您也做梦。做梦时发生的记忆和想象的部分你的大脑仍然清醒。 Don't worry if you dream. Some great stories and poems were finished while the writers were dreaming. 别担心，如果你有梦想。一些伟大的故事和诗歌的作家会完成梦想。 根据短文内容,判断下列句子正(T)、误( F) 。 1. A strange thing happens to only someone at night.T 2. Scientists and doctors are both sure what causes people's sleep.F 3. When you are in good health, you can sleep very well at night.T 4. The writer means that some dreams are good for people.T 5. If you eat too much or too little before sleep, you won't sleep well.T 2. At the Barber's Shop 在理发店 Jack went to a barber's shop and had his hair cut, but when he came out, he 杰克去一家理发店剪了头发，但是当他出来时，他 was not happy with the result. When his friend Bob saw him, he laughed 是不满意的结果。当他的朋友鲍波看到他时，他笑了 and said, "What has happened to your hair,Jack?" 说，“你的头发怎么了，杰克？” Jack said, "I tried a new barber's shop today, because I wasn't quite satisfied 杰克说，“我今天尝试了新的理发店，因为我不是很满意 with my old one, but this one seems even worse." 旧的，但是这一次似乎更差。” Bob agreed. "Yes, I think you're right, Jack. Now I'll tell you what 他同意了。”是的，我想你是对的，杰克。现在我要告诉你 to do when you go into a barber's shop next time: look at all the barber's hair, 做的时候，你走进一家理发店下时间：看所有理发师的头发， find out whose hair looks worst, and then go straight to him."
考研英语阅读理解全文翻译
Text1 Habits are a funny thing. We reach for them mindlessly, setting our brains on auto-pilot and relaxing into the unconscious comfort of familiar routine. “Not ch In but habit rules the unreflecting herd,” William Wordsworth said in the 19th century. the ever-changing 21st century, even the word “habit” carries a negative connotation. So it seems antithetical to talk about habits in the same context as creativity and innovation. 习惯是件有趣的事情。我们无意识间养成了一些习惯，我们的大脑是自动运 转的，轻松进入熟知套路所带来的不自觉舒适状态。“这并非选择，而是习惯控 制了那些没有思想的人”，这是威廉?华兹华斯（William Wordsworth）19世纪时 说的话。在现在这个日新月异的21世纪，甚至习惯这个词本身也带有负面涵义。 因此，在创造和革新的背景下来谈论习惯，似乎显得有点矛盾。 But brain researchers have discovered that when we consciously develop new habits, we create parallel synaptic paths, and even entirely new brain cells, that can jump our trains of thought onto new, innovative tracks. But don’t bother trying to kil off old habits; once those ruts of procedure are worn into the hippocampus, they there to stay. Instead, the new habits we deliberately ingrain into ourselves create parallel pathways that can bypass those old roads. 但大脑研究人员发现，当我们有意识地培养新的习惯的时候，我们创建了平 行路径，甚至是全新的脑细胞，可以让我们的思路跳转到新的创新轨道上来。但 是，不必费心试图摈弃各种旧习惯；一旦这些程序惯例融进大脑，它们就会留在 那里。相反，我们刻意培养的新习惯会创建平行路径能避开原来那些老路。 “The first thing needed for innovation is a fascination with wonder,” says D Markova, author of “The Open Mind” and an executive change consultant for Professional Thinking Partners. “But we are taught instead to ‘decide,’ just as decide is to kill off president calls himself ‘the Decider.’” She adds, however, that “to all possibilities but one. A good innovational thinker is always exploring the many other possibilities.” 大学英语
医学专业英语翻译
医学专业英语翻译 医学专业英语翻译如下： portable electric dental engine 轻便电动钻牙机，轻便牙钻portable hearing aid 袖珍助听器 portable microtome 手提式切片机 portable monitor 手提式监护仪 portable obstetric table 轻便产床 portable operating table 轻便手术台 portable photoelectric colorimeter 便携式光电比色计 portable suction unit 便携式吸引器 portable testing set 便携式测试仪器 portable typewriter 手提式打字机 portable X-ray machine 手提式X 光机 portacid 移酸滴管，滴酸器 portal 门，入门 portal venography 门静脉造影术 port B/L 港口提单 portcaustic 腐蚀药把持器 porte 柄 porte-acid 移酸滴管，滴酸器
porte-aiguille 持针器 porte-caustique 腐蚀药把持器 porte-ligature 深部结扎器，缚线把持器porte-meche 填塞条器 porte-noeud 瘤蒂结扎器 porte-polisher 握柄磨光器 porterage 搬运费 portial impression trays 局部牙托portion 部分，段，份 portligature 深部结扎器，缚线把线器port of arrival 到达港 port of delivery 交货港 port of departure 出发港 port of destination 到达港目的港 port of discharge 卸货港 portogram 门静脉造影片 portoraphy 门静脉造影术portovenogram 门静脉造影片 posion 阴离子，阳向离子 position 位置，状态 positioner 定位器（牙），位置控制器
英语阅读理解带翻译10篇精选参考
英语阅读理解带翻译10篇精选参考英语阅读理解带翻译10篇：给予 Like most people, I was brought up to look upon life as a process of getting. It was not until in my late thirties that I made this important discovery： giving-away makes life so much more exciting. You need not worry if you lack money. This is how I experimented with giving-away. If an idea for improving the window display of a neighborhood store flashes to me, I step in and make the suggestion to the storekeeper. One discovery I made about giving-away is that it is almost impossible to give away anything in this world without getting something back, though the return often comes in an unexpected form. One Sunday morning the local post office delivered an important special delivery letter to my home, though it was addressed to me at my office. I wrote the postmaster a note of appreciation. More than a year later I needed a post-office box for a new business I was starting. I was told at the window that there were no boxes left, and that my name would have to go on a long waiting list. As I was about to leave, the postmaster appeared in the doorway. He had overheard our conversation. “Wasn’t it you that wrote us that letter a year ago about delivering a special delivery to your home?” I said yes. “Well, you certainly are going to have a box in this post office if we have to make one for you. You don’t know what a letter like that means to us. We usually get nothing but complaints.” 像绝大部分人，我长大看待生命是一个过程获得。直到我在30月底，我作出这个重要发现：给予，距离使我们的生活如此更令人兴奋的。您不必担心如果缺乏资金。这是我尝试让-消失。如果一个主意，
医学英语_课文翻译
Unit One Text A：Hippocratic Oath, The Medical Ideal 或许在医学史上最持久的,被引用最多次的誓言就是”希波克拉底誓言”.这个以古希腊著名医师希波克拉底命名的誓言,被作为医师道德伦理的指导纲领.虽然随着时代的变迁,准确的文字已不可考,但誓言的主旨却始终如一——尊敬那些将毕生知识奉献于医学科学的人，尊重病人，尊重医师尽己所能治愈病人的承诺。 作为被大家公认的”医学之父”,我们对希波克拉底知之甚少.他生活于约公元前460-380年,作为一名职业医师,与苏格拉底是同代人.在他的时代,他被推举为当时最著名的医师和医学教育者.收录了超过60篇论文的专著——希波克拉底文集,被归于他的名下;但是其中有些论文的内容主旨相冲突,并成文于公元前510-300年,所以不可能都是出自他之手. 这个宣言是以希波克拉底命名的，虽然它的作者依然存在疑问。根据医学历史权威的看法，这个宣言的内容是在公元前四世纪起草的，这使希波克拉底自己起草这个宣言成为可能。无论如何，不管是否是希波克拉底自己起草的（希波克拉底宣言），这个宣言的内容都反映了他在医学伦理上的看法。 作为代表当时希腊观点的唯一一小部分，希波克拉底誓言首次被写时并没有受到很好的欢迎。然而,在那远古时代结束时,医生们开始遵循誓言的条款。当科学医学在罗马帝国衰亡后遭受一显而易见的衰退时，这个誓言,连同希波克拉底医学的指示命令，在西方都几乎被遗忘是有可能的。正是通过东方坚持不懈的探索精神，使得希波克拉底医学信念和希波克拉底宣言得以在这一恶化的时期幸存下来，尤其是通过阿拉伯当局在医学上的著作。希腊医学知识而后在西方基督教复活是通过了阿拉伯文论著和原始希腊文的拉丁文翻译。 到17世纪后期，专业行为标准已经在西方世界建立。被专业组织通过的第一部医学伦理学的法典是由英国内科医生托马斯·珀西瓦尔(1740 - 1804)1794年编写的, 并在1846年被改编和通过了美国医学协会(AMA)。Thomas Percival提出的道德规范为职业医师提供了金标准，主宰着医生们服务他人时的道德权威和独立性以及医生对病人的责任，还有医生的个人荣誉。 6.The seeds had been sown by Hippocrates - or one of his ghost writers. 种子已经被希波克拉底或者他的代笔者们所播种。 7.二战之后，由于在罪犯身上进行骇人听闻的医学实验而违反了医学伦理准则，23位来自行德国纳粹集中营的医生被判有罪。这一事件导致了纽伦堡宣言的诞生（1947），这意味着关于人类受试者的道德治疗的讨论的开启，概述了在医学研究中关于这些受试者权益的道德问题。这反过来导致1948年世界医学协会通过了维也纳宣言的宣誓。 Contemporary dilemmas in the Modern World
(完整版)医学专业英语
cardiovascular diseases; 脑垂体的功能the function of pituitary; 泌尿道urinary tract; 分子molecule; 动脉artery; 内分泌学endocrinology; 呼吸困难dyspnea; 唾液saliva; 组织学histology; 血液循环blood circulation; 血液学hematology; 生理学physiology; 解剖学anatomy; 女性生殖系统femal reproductive system; 神经细胞nerve cell; 免疫学immunology; 消化不良dyspepsia; 随意肌voluntary muscle; 胚胎学embryology; 心理学psychology; 细胞学cytology; 原生质protoplasm; 细胞膜cell membrane; 细胞核nucleus; 细胞质(浆)cytoplasm; 脱氧核糖核酸deoxyribonucleic acid; 能半渗透的semipermeable; 分子生物学molecular biology; 碳水化合物carbohydrate; 有区别性的differentially; 使…完整intact; 根据according to; 遗传特性hereditary trait; 渗滤diffusion; 转换transaction; 蓝图blueprint; 染色体chromosome; 色素pigment; 排出废液excrete waste fluid; 散开disperse; 脉冲信号impulse; 核糖核酸ribonucleic acid; 损害正常功能impair the normal function; 污染环境pollute environment; 功能失调malfunction; 致病因子causative agents; 易受侵害的人群vulnerable groups; 局部化的感染localized infection; 花柳病venereal disease; 抗原与抗体antigen&antibody; 肌电图electromyogram; 多发性硬化multiple sclerosis; 心电图electrocardiograph; 疾病的后遗症sequelea of disease; 光纤技术fiber optic technology; 造血系统hematopoietic system; 致命的疾病fatal disease; 体液body fluid; 无副作用的治疗hazard-free treatment; 无侵犯的实验检查non-invasive laboratory test; 核磁共振nuclear magnetic resonance; 葡萄糖耐糖实验the glucose-tolerance test; 乐观的预后optimistic prognosis; 超声波检测法ultrasonography; 病史medical history; 随访活动follow-up visit; 营养不良nutritional deficiency; 使细节显著highlight detail; 脑电图electroencephalogram; 缺血的组织blood-starved tissue; 肌纤维muscle fiber; 随意肌voluntary muscle; 消化道alimentary canal; 肌腹fleshy belly of muscle; 横纹肌striated muscle; 肌肉痉挛cramps of muscle; 肌肉收缩muscle contraction; 肌肉附着点attachment of the muscle; 肌肉放松relaxation of muscle; 动脉出血arterial hemorrhage; 止端insertion;起端origion;供血blood supply; 屈肌flexor; 蛋白分子protein molecule; 纤维结缔组织fibrous connective tissue; 伸肌extensor; 意志力willpower; 横切面transverse section; 起搏器pacemaker; 肌萎缩muscle atrophy; 重症肌无力myasthenia gravis; 弥散性局部缺血diffuse ischemia; 常染色体隐性autosomal recessive; 全身性感染systemic infection; 受累的肌肉muscle involved; 显著相关性significant correlation; 神经末梢nerve terminal; 自体免疫反应autoimmune reaction; 神经支配innervation; 肌营养不良muscular dystrophy; 慢性营养不良chronic mulnutrition; 先天性肌病congenital myopathy; 预期寿命life expectancy; 免疫紊乱immunologic derangemant; 发病高峰年龄the peak age of onset; 胸腺肿瘤thymoma; 呼吸肌受累the involvement of respiratory muscle; 感染性肌炎inflammatory myositic; 去神经支配denervation; 矿物质吸收mineral absorption; 机械应力mechanical stress; 骨基质有机部分the organic parts of bone matrix; 青春期早熟premature puberty; 蛋白溶解酶protein-digesting enzyme; 破骨细胞osteoclast; 松质骨spongy bone; 骨折fracture; 不规则骨irregular bone; 骨骼系统skeletal system; 维生素吸收vitamin absorption; 骨钙丧失the loss of calcium from bone; 生长激素growth hormone;
科技英语阅读翻译
科技英语阅读翻译 Company Document number：WUUT-WUUY-WBBGB-BWYTT-1982GT
ⅢT r a n s l a t e t h e f o l l o w i n g s e n t e n c e s i n t o C h i n e s e(20%)（1）He is best known for coining the term fractal to describe phenomena (such as coastlines, snowflakes, mountains and trees) whose patterns repeat themselves at smaller and smaller scales. (2) To explain these puzzling findings, some scientists have revived an old idea of Einstein’s that had been discarded as false: that the vacuum of space has energy in it that acts repulsively and accelerates the expansion of the universe. (3) New language that seemed to assert Facebook’s “irrevocable” right to retain and use a member’s personal information, even after the member had closed his or her Facebook account, deserved a little more editing. (4) The tenor of our time appears to regard history as having ended, with pronouncements from many techno-pundits claiming that the Internet is revolutionary and changes everything. (5) As a by-product of an industry that exists all over the world-the stalks that remain after grain has been harvested-straw also helpfully soaks up carbon from the atmosphere and locks it in, so long as it is not allowed to decompose. Ⅲ Translate the following sentences into Chinese（20%） （1）The problem in the paradox, he reasoned, is that we are confusing a description of sets of numbers with a description of sets of sets of numbers.
英语阅读理解带翻译篇
英语阅读理解带翻译10篇：给予Like most people, I was brought up to look upon life as a process of getting. It was not until in my late thirties that I made this important discovery: giving-away makes life so much more exciting. You need not worry if you lack money. This is how I experimented with giving-away. If an idea for improving the window display of a neighborhood store flashes to me, I step in and make the suggestion to the storekeeper. One discovery I made about giving-away is that it is almost impossible to give away anything in this world without getting something back, though the return often comes in an unexpected form. One Sunday morning the local post office delivered an important special delivery letter to my home, though it was addressed to me at my office. I wrote the postmaster a note of appreciation. More than a year later I needed a post-office box for a new business I was starting. I was told at the window that there were no boxes left, and that my name would have to go on a long waiting list. As I was about to leave, the postmaster appeared in the doorway. He had overheard our conversation. “Wasn’t it you that wrote us that letter a year ago about delivering a special delivery to your home?”I said yes. “Well, you certainly are going to have a box in this post office if we have to make one for you. You don’t know what a letter like that means to us. We usually get nothing but complaints.” 像大多数人，我长大看待生命是一个过程获得。直到我在30月底，我作出这一重要发现：给予，距离使我们的生活如此更令人兴奋的。您不必担心如果缺乏资金。这是我尝试让-消失。如果一个主意，可以改善窗口显示一个闪烁附近商店给我，我的步骤，并提出上述建议的仓库保管员。一发现我付出，离开是，它几乎是不可能放弃任何在这个世界上，没有得到回报，尽管返回往往在一个意想不到的形式。一个星期天上午，当地邮局作了重要特别
医学英语翻译常用专业词汇
这里汇聚了中西医学行业的大部分英语词汇和详细解说，如果要查询相关词汇，你可以点此word 文档工具栏的“编辑”，找到“查找”，然后点开输入你要查询的词汇就可以查询了。 西医篇： 1、医院部门及科室名称 2、医务人员名称 3、诊断和治疗常用词汇 4、常见疾病名称 5、常见手术名称 6、常用药物名称 7、常用护理术语 8、常用临床医学术语 9、医疗器材 10、医学英语快速记忆－后缀 11、主要人体系统名称 12、医院类型名称 13、医学词汇 14、医学常用字首与字根 1.医院部门及科室名称 out-patient department 门诊部 In-patient department 住院部 Nursing department 护理部 Admission office 住院处 Discharge office 出院处 Registration office 挂号处 Reception room, waiting room 侯诊室 Consultation room 诊察室 Isolation room 隔离室 Delivery room 分娩室 Emergency room 急诊室 Ward 病房室 Department of internal medicine 内科 Department of surgery 外科 Department of pediatrics 儿科 Department of obstetrics and gynecology 妇科 Department of neurology 神经科 Department of ophtalmology 眼科 E.N.T.department 耳鼻喉科 Department of stomatology 口腔科 Department of urology 泌尿科 Department of orthopedic 骨科 Department of traumatology 创伤科 Department of endocrinology 内分泌科