英语美文朗诵+翻译练习

(1) The Attitude towards Your Life

If your life feels like it is lacking the power that you want and the motivation that you need, sometimes all you have to do is shift your point of view.

By training your thoughts to concentrate on the bright side of things, you are more likely to have the incentive to follow through on your goals. You are less likely to be held back by negative ideas that might limit your performance.

Your life can be enhanced, and your happiness enriched, when you choose to change your perspective. Don't leave your future to chance, or wait for things to get better mysteriously on their own. You must go in the direction of your hopes and aspirations. Begin to build your confidence, and work through problems rather than avoid them. Remember that power is not necessarily control over situations, but the ability to deal with whatever comes your way.

Always believe that good things are possible, and remember that mistakes can be lessons that lead to discoveries. Take your fear and transform it into trust; learn to rise above anxiety and doubt. Turn your "worry hours" into "productive hours". Take the energy that you have wasted and direct it toward every worthwhile effort that you can be involved in. You will see beautiful things happen when you allow yourself to experience the joys of life. You will find happiness when you adopt positive thinking into your daily routine and make it an important part of your world.

(2) The Happy Door

Happiness is like a pebble dropped into a pool to set in motion an ever-widening circle of ripples. As Stevenson has said, being happy is a duty.

There is no exact definition of the word happiness. Happy people are happy for all sorts of reasons. The key is not wealth or physical well-being, since we find beggars, invalids and so-called failures, who are extremely happy.

Being happy is a sort of unexpected dividend. But staying happy is an accomplishment, a triumph of soul and character. It is not selfish to strive for it. It is, indeed, a duty to ourselves and others.

Being unhappy is like an infectious disease. It causes people to shrink away from the sufferer. He soon finds himself alone, miserable and embittered. There is, however, a cure so simple as to seem, at first glance, ridiculous; if you don’t feel happy, pretend to be!

It works. Before long you will find that instead of repelling people, you attract them. You discover how deeply rewarding it is to be the center of wider and wider circles of good will.

Then the make-believe becomes a reality. You possess the secret of peace of mind, and can forget yourself in being of service to others.

Being happy, once it is realized as a duty and established as a habit, opens doors into unimaginable gardens thronged with grateful friends.

(3) The Hidden Gold

There was once a farmer who had a fine olive orchard. He was very hard-working, and the farm always prospered under his care. But he knew that his three sons despised the farm work, and were eager to make wealth, through adventure.

When the farmer was old, and felt that his time had come to die, he called the three sons to him and said, "My sons, there is a pot of gold hidden in the olive orchard. Dig for it, if you wish

it."

The sons tried to get him to tell them in what part of the orchard the gold was hidden; but he would tell them nothing more.

After the farmer was dead, the sons went to work to find the pot of gold; since they did not know where the hiding-place was, they agreed to begin in a line, at one end of the orchard, and to dig until one of them should find the money.

They dug until they had turned up the soil from one end of the orchard to the other, round the tree-roots and between them. But no pot of gold was to be found. It seemed as if someone must have stolen it, or as if the farmer had been wandering in his wits. The three sons were bitterly disappointed to have all their work for nothing.

The next olive season, the olive trees in the orchard bore more fruit than they had ever given; when it was sold, it gave the sons a whole pot of gold. And when they saw how much money had come from the orchard, they suddenly understood what the wise father had meant when he said, "There is gold hidden in the orchard. Dig for it, if you wish it."

(4) Youth

Youth is not a time of life; it is a state of mind; it is not a matter of rosy cheeks, red lips and supple knees; it is a matter of the will, a quality of the imagination, a vigor of the emotions; it is the freshness of the deep springs of life.

Youth means a temperamental predominance of courage over timidity of the appetite, for adventure over the love of ease. This often exists in a man of 60 more than a boy of 20. Nobody grows old merely by a number of years. We grow old by deserting our ideals.

Years may wrinkle the skin, but to give up enthusiasm wrinkles the soul. Worry, fear, self-distrust bows the heart and turns the spirit back to dust.

Whether 60 or 16, there is in every human being’s heart the lure of wonder, the unfailing childlike appetite of what’s next and the joy of the game of living. In the center of your heart and my heart there is a wireless station: so long as it receives messages of beauty, hope, cheer, courage and power from men and from the Infinite, so long are you young.

When the aerials are down, and your spirit is covered with snows of cynicism and the ice of pessimism, then you are grown old, even at 20, but as long as your aerials are up, to catch waves of optimism, there is hope you may die young at 80.

(5) The Power of Words

A group of frogs were traveling through the woods, and two of them fell into a deep pit. When the other frogs saw how deep the pit was, they told the two frogs that they were as good as dead. The two frogs ignored the comments and tried to jump up out of the pit with all their might. The other frogs kept telling them to stop, that they were as good as dead. Finally, one of the frogs took heed of what the other frogs were saying and gave up. He fell down and died.

The other frog continued to jump as hard as he could. Once again, the crowd of frogs yelled at him to stop the pain and just die. He jumped even harder and finally made it out. When he got out, the other frogs said, "Did you not hear us?" The frog explained to them that he was a little deaf.

He thought they were encouraging him the entire time.

This story teaches us two lessons:

1. There is power of life and death in the tongue. An encouraging word to someone who is down can lift them up and help them make it through the day.

2. A destructive word to someone who is down can be what it takes to kill them.

Be careful of what you say. Speak life to those who cross your path. The power of words is sometimes hard to understand that an encouraging word can go such a long way.

(6) The Pleasure of Walking

Walking gives us back our senses. We see, hear, smell the world as we never can when we ride. No matter what vehicle, it is the vehicle that is moving, not ourselves. We are trapped inside its fixed environment, and once we have taken in its sensory aspects — mainly in terms of comfort or discomfort — we turn off our perceptions and either go to sleep or open a magazine and begin dozing awake.

But when we walk, the environment changes every moment and our senses are continuously being alerted. Around each corner of a city block, around each bend in a country road, there is something new to greet the eyes, the ears, the nose. Even the same walk, the one we may take every day, is never the same from one day to another, from one week and season to another.

This is true not only in the country, but anywhere at all. In New York City, a group of executives who meet every weekday morning walk from their homes to their offices. Their way takes them through quiet streets of old brownstones, one of the oldest neighborhoods in the city, then up and over the Brooklyn Bridge with its cathedral arches supporting the weblike drapery of cables, then down into the tight skyscraper canyons of the financial district.

On their daily route they see, hear, smell the city in all its seasonal changes, under bright and cloudy skies. Only the most inclement weather stops them — suitably dressed, they can walk with pleasure in spring rains, autumn drizzles, the sunlight of a summer morning or a soft winter snowfall. The river waters roll by below their feet, sullen or sparkling. Tugboats chug past, shoving and hauling their variously laden barges; on a shrouded morning, foghorns hoot and moan. The famous skyline of lower Manhattan rises before them, glittering in sun, afloat in mist, against a backdrop of sky never twice the same.

(7) Venice

Venic e is a fascinating city between sea and sky. It is built on 117 islands. There aren’t any cars or buses because there are no highways in Venice. But it has 150 canals and 400 bridges. The narrow streets, with their historic names, are paved with flagstones, but have no footpaths. They are lined with flower-decked balconies, Madonnas, shop signs and lanterns. Artisans’ stalls and palaces stand side by side. The squares are charming. The brick bridges, with white stone trimmings, are pitched high to allow barges to pass under them.

Every year thousands of tourists from the five continents visit this beautiful city. They are always amazed at the charm of her water and pellucid light, which can make them free from all dust and cooled by the sea breezes.

But because the level of the surrounding waters is constantly rising, the exceptional position of Venice constitutes a threat to its very existence. And the Venetians love their city and want to stay there to save Venice from the sea. Now carious measures have already been taken and a plan to safeguard and remedy the position is under investigation.

(8) Hard Work is Good for Health

Scientists find that hard-working prestigious people live longer than average men and women. Career women are healthier than housewives. Evidence shows that the jobless are in poorer health than the job-holder. An investigation shows that whenever the unemployment rate increases by 1%, the death rate increases correspondingly by 2%. All this comes down to one point: work is helpful to health.

Why is work good for health? It is because work keeps people busy, away from loneliness and solitude. Researches show that people feel unhappy, worried and solitary when they have nothing to do. Instead, the happiest are those who are busy. Many high achievers who love their careers feel that they are happiest when they are working hard. Work serves as a bridge between man and reality. By work, people come into contact with each other. By collective activity, they find friendship and warmth. This is helpful to health. The loss of work means the loss of everything. It affects man spiritually and makes him liable to disease.

Besides, work gives one a sense of fulfillment and a sense of achievement. Work makes one feel his value and status in society. When a writer finishes his writing or a doctor successfully operates on a patient or a teacher sees his students grow, they are happy beyond words.

From the above we can come to the conclusion that the more you work, the happier and healthier you will be. Let us work hard and study well and live a happy and healthy life.

(9) How to Learn with Success

To learn with success is not a very difficult task if some fundamental principles are laid down. While discussing this subject, I’d like to mention four indispen sable principles: diligence, devotion, constancy, and punctuality.

All things can be conquered by diligence. It makes the foolish wise, the poor rich, and the humble noble. It produces a wonderful effect. In learning, the work of a diligent fool doubles that of a lazy wit.

Devotion means to set our heart on one thing at a time and give up all other thoughts. Never think of learning another subject while studying one subject. Those who often change their studies will never succeed in the long run. Therefore, in order to be successful we need devotion.

Constancy makes success a certainty. In contrast, inconstancy often results in failure. If we study day after day, there is nothing that can not be achieved. We should remember a worthy proverb “Constant dropping of water wears away a stone.”

Besides, there is another rule that contributes to one’s accomplishments, that is, punctuality. The habit of keeping regular hours is of extreme importance to successful learning. Work while you work; play while you play. Every man will certainly become strong and wise if he does so.

(10) What I Have Lived for

Three passions, simple but overwhelmingly strong, have governed my life: the longing for love, the search for knowledge, and unbearable pity for the suffering of mankind. These passions, like great winds, have blown me hither and thither, in a wayward course, over a deep ocean of anguish, reaching to the verge of despair.

I have sought love, first, because it brings ecstasy -- ecstasy so great that I would have sacrificed all the rest of life for a few hours of this joy. I have sought it, next, because it relieves loneliness -- that terrible loneliness in which one shivering consciousness looks over the rim of the

world into cold unfathomable lifeless abyss. I have sought it, finally, because in the union of love I have seen, in a mystic miniature, the prefiguring vision of the heaven that saints and poets have imagined. This is what I sought, and though it might seem too good for human life, this is what -- at last -- I have found.

With equal passion I have sought knowledge. I have wished to understand the hearts of men, I have wished to know why the stars shine. And I have tried to apprehend the Pythagorean power by which number holds away above the flux. A little of this, but not much, I have achieved.

Love and knowledge, so far as they were possible, led upward toward the heavens. But always pity brought me back to earth. Echoes of cries of pain reverberated in my heart. Children in famine, victims tortured by oppressors, helpless old people a hated burden to their sons, and the whole world of loneliness, poverty, and pain make a mockery of what human life should be. I long to alleviate the evil, but I cannot, and I too suffer.

This has been my life. I have found it worth living, and I would gladly live it again if the chance were offered to me.

专业英语第一篇文章翻译

Historical Development of Matertials and Technology The common engineering materials include metals, cementing materials, concrete building stones, clay products, insulating materials, timber. Some of them are described here from the stand-point of occurrence, manufacture, properties, methods of testing, and use. The development of materials with improved properties is a vital phase of engineering. Progress in engineering construction has been dependent on the availability of materials of suitable physical properties in large quantities; for example, the development of the modern automobile was critically dependent on availability of high quality alloy steels, and the all-metal airplane was made possible by the development of light weight high-strength alloys. ◆Phase: 相；阶段。 ◆a distinct period or stage in a process of change or forming part of something's development Example： phase two of the development is in progress. ◆第二阶段开发正在进行中。 ◆Vital: 必要的，必不可少的。 ◆it is vital that the system is regularly maintained.这个系统有必要 经常维修。

优秀英语美文摘抄带翻译

优秀英语美文摘抄带翻译 【导语】优美的文字于细微处传达出美感,并浸润着学生的心灵。通过英语美文,学生不仅能够感受语言之美,领悟语言之用,还能产生学习语言的兴趣。以下是由分享优秀英语美文摘抄带翻译，希望可以帮助大家! 【篇一】优秀英语美文摘抄带翻译 We are not born with courage, but neither are we born with fear. Maybe some of our fears are brought on by your own experiences, by what someone has told you, by what you’ve read in the papers. Some fears are valid, like walking alone in a bad part of town at two o’clock in the morning. But once you learn to avoid that situation, you won’t need to live in fear of it. 我们的勇气并不是与生俱来的，我们的恐惧也不是。也许有些恐惧来自你的亲身经历，别人告诉你的故事，或你在报纸上读到的东西。有些恐惧可以理解，例如在凌晨两点独自走在城里不安全的地段。但是一旦你学会避免那种情况，你就不必生活在恐惧之中。 Fears, even the most basic ones, can totally destroy our ambitions. Fear can destroy fortunes. Fear can destroy relationships. Fear, if left unchecked, can destroy our lives. Fear is one of the many enemies lurking inside us.

英语诵读文章12篇

古人云“熟读唐诗三百首，不会作诗也会吟”，读是要朗声吟诵，诵出韵味来。熟读甚至背诵（英语）文章主要在于培养语感。 1 English in the World Some people say that the English language no longer belongs to the English, and it belongs to the world. It is estimated that the number of people who use English exceeds 750 million. Among these, about 350 million are native speakers, while the rest use it as an official language. If we add to this number the people who have acquired the language to some extent, the total is close to one billion. English plays an increasingly important role in the world as a medium for conducting international business and diplomacy, as well as in science and medicine, the Internet, air and sea communications, international sports events, radio and TV programs, pop songs and movies. 世界上的英语 有人说英语已不再属于英国人了，它属于全世界。据估计，使用英语的人超过七亿五千万，其中大约有三亿五千万是以英语为母语的人，而其余的人将英语作为官方语言使用。如果我们再加上已经掌握英语到一定程度的人，这个总数将接近十亿。 英语，作为进行国际业务和外交的工具，在世界上起着越来越重要的作用。它还在科学、医药、互联网、空中及海洋通信、国际体育赛事、电台电视节目、流行歌曲及电影中发挥着越来越重要的作用。 estimate 估计 exceed 超过 native 本族的，本国的official 官方的 acquire 掌握 to some extent 达到某种程度 billion 千万 increasingly 越来越多地 medium 工具，手段conduct 实行，执行 international 国际的 diplomacy 外交 medicine 医药 communication 通信 event 事件

专业英语课文翻译

United 1 材料科学与工程 材料在我们的文化中比我们认识到的还要根深蒂固。如交通、房子、衣物，通讯、娱乐和食物的生产，实际上，我们日常生活中的每一部分都或多或少地受到材料的影响。历史上社会的发展、先进与那些能满足社会需要的材料的生产及操作能力密切相关。实际上，早期的文明就以材料的发展程度来命名，如石器时代，铜器时代。早期人们能得到的只有一些很有限的天然材料，如石头、木材、粘土等。渐渐地，他们通过技术来生产优于自然材料的新材料，这些新材料包括陶器和金属。进一步地，人们发现材料的性质可以通过加热或加入其他物质来改变。在这点上，材料的应用完全是一个选择的过程。也就是说，在一系列非常有限的材料中，根据材料的优点选择一种最适合某种应用的材料。直到最近，科学家才终于了解材料的结构要素与其特性之间的关系。这个大约是过去的 60 年中获得的认识使得材料的性质研究成为时髦。因此，成千上万的材料通过其特殊的性质得以发展来满足我们现代及复杂的社会需要。很多使我们生活舒适的技术的发展与适宜材料的获得密切相关。一种材料的先进程度通常是一种技术进步的先兆。比如，没有便宜的钢制品或其他替代品就没有汽车。在现代，复杂的电子器件取决于所谓的半导体零件. 材料科学与工程有时把材料科学与工程细分成材料科学和材料工程学科是有用的。严格地说，材料科学涉及材料到研究材料的结构和性质的关系。相反，材料工程是根据材料的结构和性质的关系来设计或操纵材料的结构以求制造出一系列可预定的性质。从功能方面来说，材料科学家的作用是发展或合成新的材料，而材料工程师是利用已有的材料创造新的产品或体系，和/或发展材料加工新技术。多数材料专业的本科毕业生被同时训练成材料科学家和材料工程师。“structure”一词是个模糊的术语值得解释。简单地说，材料的结构通常与其内在成分的排列有关。原子内的结构包括介于单个原子间的电子和原子核的相互作用。在原子水平上，结构包括原子或分子与其他相关的原子或分子的组织。在更大的结构领域上，其包括大的原子团，这些原子团通常聚集在一起，称为“微观”结构，意思是可以使用某种显微镜直接观察得到的结构。最后，结构单元可以通过肉眼看到的称为宏观结构。 “Property”一词的概念值得详细阐述。在使用中，所有材料对外部的刺激都表现出某种反应。比如，材料受到力作用会引起形变，或者抛光金属表面会反射光。材料的特征取决于其对外部刺激的反应程度。通常，材料的性质与其形状及大小无关。实际上，所有固体材料的重要性质可以概括分为六类：机械、电学、热学、磁学、光学和腐蚀性。对于每一种性质，其都有一种对特定刺激引起反应的能 力。如机械性能与施加压力引起的形变有关，包括弹性和强度。对于电性能，如电导性和介电系数，特定的刺激物是电场。固体的热学行为则可用热容和热导率来表示。磁学性质

英语朗诵美文

Grow Great by Dreams 因梦想而伟大 The question was once asked of a highly successful businessman, “How have you done so much in your lifetime?” 曾经有人问一个非常成功的商人：“你是怎样在有生之年取得这样的成就呢？” He replied, “I have dreamed. I have turned my mind loose to imagine what I wanted to do. Then I have gone to bed and thought about my dreams. In the night I dreamt about my dreams. And when I awoke in the morning, I saw the way to make my dreams real. While other people were saying, 'You can't do that, it is impossible,' I was well o n my way to achieving what I wanted.” As Woodrow Wilson, 28th President of the U.S., said: “We grow great by dreams. All big men are dreamers.” 他回答：“我做梦。我放飞自己的思想，想象自己想要的东西。然后我就上床，沉思自己的梦想。那个晚上，我就可以梦到自己的梦想。当第二天早上醒来，我就看到了通向梦想的路。当别人对我说：…你做不到，这不可能?，而我总是坚持实现自己梦想的路。”正如美国第28届总统伍德鲁·威尔逊所说：“我们因为梦想而变得伟大。所有伟人都是梦想家。” They see things in the soft haze of a spring day, or in the red fire on a long winter's evening. Some of us let these dreams die, but others nourish and protect them; nourish them through bad days until they bring them to the sunshine and light which comes always to those who sincerely hope that their dreams will come true.

完整20篇初中英语小短文带翻译

1 Dogs People often say that a dog is man's best friend. Over thousands of years, man has taught his dogs to do many kinds of work besides guarding the home. For example, sheepdogs are famous for their ability to control a flock of hundreds of sheep. Dogs have been used to aid disabled people for centuries. A guide dog can lead its blind owner. Nowadays, dogs can be taught to turn on light switches, open refrigerator doors and dial the telephone for their disabled owners. For the majority of people, however, dogs are simply pets and friends for both young and old members of the family. guard 看守,看护sheepdog 牧羊犬flock 群aid 帮助 disabled 残疾人century 世纪guide dog 导盲犬dial 拨majority 大多数 狗 人们总是说狗是人类最好的朋友.几千年来,除了看家外,人类还教会了狗去做许多其他的事,例如,牧羊犬就因其可以控制数百只羊的羊群而出名. 狗用来帮助残疾人已有好几个世纪了.导盲犬可以为盲主人引路.现在,人们还教狗为残疾主人打 开电灯、开冰箱和拨电话.然而,对于大多数人来说,狗只是家里老人和孩子们的宠物和朋友. 2 Detective Work A bank robber stole a lot of money. He was caught and sent to prison, but the money was never found. When he came out of prison, they watched him to see what he would do. Here is the detective, reporting to the inspector. Yes, sir, I found Johnny . I followed him all around the town, but frankly, I couldn't make anything out of what he bought. Here's the list. shirt , heavy crowbar, box of chocolates , shovel, heavy hammer, bunch of flowers .The inspector said, Good. That helps me a lot. Do you remember how we watched him helping his neighbor, old Mrs. Judson to cover her backyard with cement? detective 侦探的侦探robber 强盗,盗贼prison 监狱 inspector 检察官frankly 坦白地,真诚地crowbar 铁撬,撬棒 shovel 铲,铁铲hammer 铁锤,锤子backyard 后院cement 水泥 侦探工作 一个盗贼从银行偷了很多钱.他被抓住送到监狱,但是钱没找到. 我发现了,先生,是的“侦探正向检察官报告：,这不.看他会做什么,他被监视,当他从监狱出来时．强尼?阿米塔基,我跟着他转遍了全镇,但坦白说,我不能从他买的东西中推断出什么.这里是清单.”衬衫、大铁撬、一盒巧克力铁铲、大铁锤、一束花. 检察官说：“好,这对我很有帮助.你还记得我们看到他是怎么帮他的邻居,贾德森老太太用水泥铺院子的吗?” 3 What is Time? （Nursery Rhyme） Time is grain for peasants. Time is wealth for workers.

英语诵读文章12篇

1 . English in the World Some people say that the English language no longer belongs to the English, and it belongs to the world. It is estimated that the number of people who use English exceeds 750 million. Among these, about 350 million are native speakers, while the rest use it as an official language. If we ad d to this number the people who have acquired the language to some extent, the total is close to one billion. English plays an increasingly important role in the world as a medium for conducting international business and diplomacy, as well as in science and medicine, the Internet, air and sea communications, international sports events, radio and TV programs, pop songs and movies. 世界上的英语 有人说英语已不再属于英国人了，它属于全世界。据估计，使用英语的人超过七亿五千万，其中大约有三亿五千万是以英语为母语的人，而其余的人将英语作为官方语言使用。如果我们再加上已经掌握英语到一定程度的人，这个总数将接近十亿。 英语，作为进行国际业务和外交的工具，在世界上起着越来越重要的作用。它还在科学、医药、互联网、空中及海洋通信、国际体育赛事、电台电视节目、流行歌曲及电影中发挥着越来越重要的作用。estimate 估计exceed 超过native 本族的，本国的 official 官方的acquire 掌握to some extent 达到某种程度billion 千万increasingly 越来越多地medium 工具，手段conduct 实行，执行international 国际的dipl omacy 外交 medicine 医药communication 通信event 事件 2.A Friend When you read an English book, you often come across new words. You might try to guess what the words mean from the words you know, but when you cannot guess the meanings of new words at all, what should you do? You have a good friend then. From him you can learn what a word means, how to pronounce a word, how to use a word, and so on. This friend can always be with you, and you can always ask him to help you. Do you know who this friend is? It is

计算机专业英语课文翻译部分(第四版)

1.2 总线互连 总线是连接两个或多个设备的通信通路。总线的关键特征是，它是一条共享传输介质。多个设备连接到总线上，任一个设备发出的信号可以为其他所有连接到总线上的设备所接收。如果两个设备同时传送，它们的信号将会重叠，引起混淆。因此，一次只能有一个设备成功地（利用总线）发送数据。 典型的情况是，总线由多条通信通路或线路组成，每条线(路)能够传送代表二进制1和0的信号。一段时间里，一条线能传送一串二进制数字。总线的几条线放在一起能同时并行传送二进制数字。例如, 一个8位的数据能在8条总线线上传送。 计算机系统包含有多种不同的总线，它们在计算机系统层次结构的各个层次提供部件之间的通路。连接主要计算机部件(处理机, 存储器, I/O)的总线称为系统总线。系统总线通常由50~100条分立的(导)线组成。每条线被赋予一个特定的含义或功能。虽然有许多不同的总线设计，但任何总线上的线都可以分成三个功能组：数据线、地址线和控制线。此外可能还有为连接的模块提供电源的电源线。 数据线提供系统模块间传送数据的路径，这些线组合在一起称为数据总线。典型的数据总线包含8、16或32根线，线的数量称为数据总线的宽度。因为每条线每次传送1位，所以线的数目决定了每次能同时传送多少位。数据总线的宽度是决定系统总体性能的关键因素。 地址线用于指定数据总线上数据的来源和去向。例如，如果处理机希望从存储器中读一个字的数据，它将所需要字的地址放在地址线上。显然，地址总线的宽度决定了系统最大可能的存储器容量。 控制线用来控制对数据线和地址线的访问和使用。由于数据线和地址线被所有部件共享，因此必须用一种方法来控制它们的使用。控制信号在系统模块之间传送命令和定时信息。定时信息指定了数据和地址信息的有效性，命令信号指定了要执行的操作。 大多数计算机系统使用多总线，这些总线通常设计成层次结构。图1.3显示了一个典型的高性能体系结构。一条局部总线把处理机连接到高速缓存控制器，而高速缓存控制器又连接到支持主存储器的系统总线上。高速缓存控制器集成到连接高速总线的桥中。这一总线支持连接到：高速LAN、视频和图形工作站控制器，以及包括SCSI 和FireWire的局部外设总线的接口控制器。低速设备仍然由分开的扩充总线支持，用一个接口来缓冲该扩充总线和高速总线之间的通信流量。 PCI 外部设备互连是流行的高带宽的、独立于处理机的总线，它能够作为中间层或外围设备总线。当前的标准允许在66MHz频率下使用多达64根数据线，其原始传输速率为528MB/s, 或4.224Gbps。PCI被设计成支持各种各样基于微处理机的配置，包括单处理机和多处理机的系统。因此，它提供了一组通用的功能。PCI使用同步时序以及集中式仲裁方案。 在多处理机系统中，一个或多个PCI配置可通过桥接器连接到处理机的系统总线上。系统总线只支持处理机/高速缓存单元、主存储器以及PCI桥接器。使用桥接器使得PCI独立于处理机速度，又提供快速接收和传送数据的能力。 2.1 光存储介质：高密度存储器 2.1.1 光盘 光盘技术最终可能使磁盘和磁带存储淘汰。用这种技术，磁存储器所用的读/写头被两束激光代替。一束激光通过在光盘上刻制微小的凹点，对记录表面进行写；而另一束激光用来从光敏感的记录表面读取数据。由于光束容易被偏转到光盘上所需要的位置，所以不需要存取臂。 对用户而言，光盘正成为最有吸引力的选择。它们(光盘)对环境变化不太敏感，并且它们以每兆字节比磁盘低得多的存储器价格提供更多的直接存取存储器。光盘技术仍在出现，并且还需要稳定；然而，目前有三种主要类型的光盘。它们是CD-ROM、WORM盘和磁光盘。 CD-ROM 1980年引入的，非常成功的CD，或紧密盘是设计来提高音乐的录音重放质量的光盘。为了制作一张CD，把音乐的模拟声音转换成等价的数字声音，并且存储在一张4.72英寸的光盘上。在每张光盘上可以用数字格式（用20亿数字位）记录74分钟的音乐。因为它的巨大存储容量，计算机工业的企业家们立刻认

英语美文朗诵欣赏知识分享

英语美文朗诵欣赏

美丽的微笑 A Smile is A Gift That Anyone Can Give It costs nothing, but saves much. It enriches those who receive, without impoverishing those who give. It happens in a flash, and the memory of it sometimes lasts forever. None is so rich that he can get along without it; none so poor that he is not enriched by it. It creates happiness in the home, fosters goodwill in business, and is the countersign of friends. It is rest to the weary, daylight to the discouraged, sunshine to the sick, and nature's best antidote for trouble. It cannot be bought, borrowed, or stolen, for it is no earthly good to anyone until it is given away. If you meet someone too burdened with grief or worry to smile, just give him one of yours. For nobody needs a smile so much as he who has none left to give. 微笑不需要花费你一分钱，但却能带来很多。它使那些得到它的人富有，却不会使付出它的人贫穷。它发生在一瞬间，但它的记忆有时却是永恒的。如果人们可以没有微笑，那么，无论拥有什么都会觉得贫穷。如果人们无法因此而丰富，那么就没有什么比这更贫穷了。微笑为家庭到来欢笑，为工作增添善意，是友谊的象征。它是缓解疲劳的良药，是征服气馁的日光，是治疗疾病的阳光，是自然界中战胜困难的灵丹妙药。它不能买，不能借，也不能偷，因为在它被给予他人之前是毫无用处的。如果你遇见某人被悲伤和焦虑压得喘不过气来，只要给他一个微笑就行。因为当一个人无法再给予微笑的时候，他比任何时候都需要微笑！ 青春 Youth is not a time of life; it is a state of mind; it is not a matter of rosy cheeks, red lips and supple knees; it is a matter of the will, a quality of the imagination, a vigor of the emotions; it is the freshness of the deep springs of life. Youth means a temperamental predominance of courage over timidity, of the appetite for adventure over the love of ease. This often exists in a man of 60 more than a boy of 20. Nobody grows old merely by a number of years. We grow old by deserting our ideals. Years may wrinkle the skin, but to give up enthusiasm wrinkles the soul. Worry, fear, self-distrust bows the heart and turns the spirit back to dust. Whether 60 or 16, there is in every human being's heart the lure of wonder, the unfailing childlike appetite for what's next in the joy of the game of living. In the center of your heart and my heart there is a wireless station: so long as it receives messages of beauty, hope,

英语美文(带翻译)

Always will I seek the seed of triumph in every adversity 在困境中寻找成功的希望 1．There is no better school than adversity. Every defeat, every heartbreak, every loss, contains its own seed, its own lesson on how to improve my performance next time. Never again will I contribute to my downfall by refusing to face the truth and learn from my past mistakes. Because I know: gems cannot shine without polish, and I cannot perfect myself without hardship. 2．Now I know that there are no times in life when opportunity, the chance to be and do, gathers so richly about my soul as when it has to suffer cruel adversity. Then everything depends on whether I raise my head or lower it in seeking help. Whenever I am struck down, in the future, by any terrible defeat, I will always inquire of myself, after the first pain has passed how I can turn that adversity into good. What a great opportunity that moment might present… to take the bitter root I am holding and transform it into a fragrant garden of flowers. 3．Always will I seek the seed of triumph in every adversity. 1．逆境是一所最好的学校每一次打击、每一次损失。都蕴含着成功的萌芽。都教会我在下一次有更出色的表现。我再也不会逃避现实，也不会拒绝从以往的错误中获取经验，我不再因此促成自己的失败。因为我我知道，宝玉不经磨砺就不能发光，没有磨练，我也不完善自我。 2．现在我知道，灵魂倍受煎熬的时刻，也正是生命中最多选择与机会的时刻。任何事情的成败取决于我在寻求帮助时是抬起头还是低下头。无论何时，当我被可怕的失败击倒，在最初的阵痛过去之后，我都要想方设法将苦难变成好事。伟大的机遇就在这一刻闪现——这苦涩的根本必将迎来满园芬芳！ 3．我将一直在困境中寻找成功希望。 Hold Fast to Dreams 紧紧抓住梦想 1．We all have dreams. We all want to believe deep down in our souls that we have a special gift, that we can make a difference, that we can touch others in a special way, and that we can make the world a better place. 2．At one time in our lives, we all had a vision for the quality of life that we desire and deserve. Yet, for many of us, those dreams have become so shrouded in the frustrations and routines of daily life that we no longer even make an effort to accomplish them. For far too many, the dream has dissipated and with it, so has the will to shape our destinies. Many have lost that sense of certainty that creates the winner’s edge.

专业英语课文翻译

School of chemical engineering and pharmaceutical test tubes 试管test tube holder试管夹test tube brush 试管刷test tube rack试管架 beaker烧杯stirring搅拌棒thermometer温度计boiling flask长颈烧瓶Florence flask平底烧瓶 flask,round bottom,two-neck boiling flask,three-neck conical flask锥形瓶wide-mouth bottle广口瓶graduated cylinder量筒gas measuring tube气体检测管volumetric flask容量瓶transfer pipette移液管Geiser burette(stopcock)酸式滴定管funnel漏斗Mohr burette(with pinchcock)碱式滴定管 watch glass表面皿evaporating dish蒸发皿ground joint磨口连接Petri dish有盖培养皿 desiccators干燥皿 long-stem funnel长颈漏斗filter funnel过滤漏斗 Büchner funnel瓷漏斗separatory funnel分液漏斗 Hirsh funnel赫尔什漏斗filter flask 吸滤瓶Thiele melting point tube蒂勒熔点管 plastic squeez e bottle塑料洗瓶 medicine dropper药用滴管rubber pipette bulb 吸球microspatula微型压舌板pipet吸量管mortar and pestle研体及研钵filter paper滤纸Bunsen burner煤气灯burette stand滴定管架support ring支撑环 ring stand环架distilling head蒸馏头 side-arm distillation flask侧臂蒸馏烧瓶air condenser空气冷凝器centrifuge tube离心管 fractionating column精(分)馏管 Graham condenser蛇形冷凝器 crucible坩埚crucible tongs坩埚钳beaker tong烧杯钳economy extension clamp经济扩展夹extension clamp牵引夹utility clamp铁试管夹hose clamp软管夹 burette clamp pinchcock;pinch clamp弹簧夹 screw clamp 螺丝钳 ring clamp 环形夹goggles护目镜stopcock活塞wire gauze铁丝网analytical balance分析天平 分析化学 absolute error绝对误差accuracy准确度assay化验analyte(被)分析物calibration校准constituent成分coefficient of variation变异系数confidence level置信水平detection limit检出限determination测定estimation 估算 equivalent point等当点gross error总误差impurity杂质indicator指示剂interference干扰internal standard内标 level of significance显著性水平 limit of quantitation定量限masking掩蔽matrix基体precision精确度 primary standard原始标准物purity纯度qualitative analysis定性分析 quantitative analysis定量分析random error偶然误差reagent试剂 relative error相对误差robustness耐用性sample样品relative standard deviation相对标准偏差 selectivity选择性sensitivity灵敏度specificity专属性titration滴定significant figure有效数字solubility product溶度积 1

英语美文欣赏带翻译

Friends or 'Enemies?' When I was younger, my Dad used to tell me: "Boys don't want to be your friend." He then left the rest to my imagination. At the time, I didn't agree. I thought: I can crack a good joke, I know how to shoot a hoop, and I'm a cheerful person (but not in an annoying way). What kind of boy wouldn't want to be around that kind of girl? Turns out, my Dad was right. Not to be all "Samantha Brick" about it, but in my experience, single, heterosexual men aren't actively looking for an exclusively platonic relationship with a woman they find sexually attractive. This of course is not a revolutionary concept. In fact, it seems pretty natural to me. Now, I will be the first to say that it is really and truly the most wonderful thing in the world if the attraction is mutual. But the Powers That Be seem to like to play these complicated little mating games with humans where the guy we want to re-enact scenes from 9? Weeks with sees our attractiveness level as akin to that of a discarded dishcloth, and the most physical we could see ourselves being with the guy who actually likes us is a game of ping pong over an especially long table. All of which means that someone usually ends up getting rejected. I'm sure I'm not alone when I say I have struggled with the scenario where I am not interested in a man romantically, but I want to keep him as a friend because he is funny and I enjoy his company, or he has shown himself to be that rare specimen known as "a nice, genuine person, " or he simply doesn't mention his therapist in every other sentence. Rather than string him along and give him hope, I feel compelled to somehow communicate to him sooner rather than later that we'll just be staying friends, nothing more. Otherwise, I think I am being unfair to him. Why should he waste his romantic stamina on me when there are loads of other single women out there who might fall instantly in love with him? The thing is, it can sometimes be tricky to reject a man and keep him as a friend. If the operation is not executed carefully, you may end up creating a "menemy." It requires a certain amount of skill to be able to turn down a man's sexual advances or romantic gestures and then get him to agree to meet you for blueberry pancakes the following weekend and chat about the latest Woody Allen film. Some men aren't satisfied with just that. I'm not clear why. What's so bad about friendship? Everyone needs buddies. But I've seen men react poorly or simply fall off the face of the earth. I get it -- their feelings are hurt. None of us likes getting rejected. But in my experience, some men find it especially soul-crushing. I am only bringing all of this up because I recently had to go through this scenario again. I had spent some time cultivating a friendship with a man who, in my defense, I thought was gay. So I didn't see the harm in him buying me the occasional falafel, or accepting an invitation to see a film with him. Isn't that what friends are for? But a mutual friend shed light on his sexual orientation (straight) and suggested that his intentions -- and attentions -- weren't platonic. He had never "made the moves" but now it was all crystal clear -- that explains the way he had looked at me that time the tahini sauce dribbled down my chin! Since he had clearly been too timid to express his feelings, I thought I would be clever this time and subtly mention the dates I had been going on, focusing on the one guy I was kind of keen on, so that he would know that I was "unavailable" for heavy petting and those sorts of activities, but that I was available for things like roller skating, falafel-eating and shooting the breeze. Doesn't that sound nice? That way, he would known not to try to lean in for a kiss, and I wouldn't have to pull the Stevie Wonder dance and dodge him went he went for it. It was like pre-rejection, yet I was sparing his feelings because he didn't even have to put himself out there! I really thought I was being brilliant. It backfired, of course. Said man ended up sending me an email rant accusing me of being insensitive by talking about other men when he had "feelings for me." As if I am psychic, by the way, just because I am a woman! How was I supposed to know that? I think in his mind we were dating. In my mind, he was my new gay BFF. In the end, I got mad at him for getting mad at me, and now the friendship has ended. And I have created yet another "menemy." Look, I have also tried the direct thing: "I really like you, but only as a friend, " but you can only do that when the guy has made his intentions clear, and in my experience, they either cope okay (though rarely do I feel much enthusiasm for friendship after that), or they really don't cope well. I also tried the thing where you make them think they are rejecting you, but it gets quite confusing and only works if the guy isn't very sharp, and why would I -- or you -- be hanging out with someone not that sharp in the first place? As we all remember, Billy Crystal's character says men and women can't be friends in When Harry Met Sally because the sex stuff gets in the way. I do have single, male, heterosexual friends with whom I have an easy, non-romantic rapport, but I honestly don't know if they would walk away if I was sprawled naked on a bed calling out to them. I may not be everybody's cup of tea, but sometimes, I wonder if they wonder. And they may wonder if I wonder. If so, I hope they'll keep it to