大学英语四级词汇 082

useless 无用的，没有价值的 user 用户，使用者 usual 通常的，平常的 usually 通常 utility 效用，实用 utilise 实用 utilize 利用 utmost 极度的，极端的，极限 utter 完全的，彻底的说 vacant 空闲的，空缺的

用Mp3背六级单词045

maintenance inflict identification unemployment intensify decay idiom outbreak idleness beam overwhelming shipwreck graphite thrifty preset misfortune untie compression immortal weary roam transplant impartial vocal

天真与经验之歌:第8篇 小男孩的迷路

The Little Boy Lost 小男孩的迷路 'Father, father, where are you going? 父亲、父亲，你往哪儿去？ O do not walk so fast! 啊，别走得这么快呀。 Speak, father, speak to your little boy, 说话呀，父亲，跟你孩子说话呀

60秒科学:新CPR,免去人工呼吸的尴尬

New data show that when bystanders without emergency medical training try CPR using only chest compression, the results can be better than if they also attempt mouth-to-mouth. Christopher Intagliata reports 看见身边有人突然倒了， 想救人家

机械类词汇大全-45

1849 、 静摩擦 staticfriction 1850 、 颈轴承 journalbearing 1851 、 颈缩 necking 1852 、 频带宽度 bandwidth 1853 、 频率 frequency 1854 、 头座 headstock 1855 、 阈值；临界值

英国学生科学读本 第89期:云和雨(2)

Every day the sun's rays change thousands of tons of liquid water into water-vapour; 每天, 太阳光都能够将数千吨的液态水转化为水蒸气； and this water-vapour mingles with the air, and is carried along by the wind. 随后, 水蒸气

英国学生科学读本 第88期:冷凝(3)

When we change a liquid into vapour, and cool this vapour till it is liquid again, 将水加热成水蒸气, 然后对其进行冷却直至再次液化, we are said to distil the liquid, and the apparatus for doing this is called a still. 这个过程就

英国学生科学读本 第88期:冷凝(2)

Thus by heating liquids we cause them to evaporate, or change into vapours or gases; 因此, 可以看出：我们能够通过加热液体使得它们蒸发, 变成水蒸气或气体； and by taking away heat from these gases, or cooling them, we tu

英国学生科学读本 第88期:冷凝(1)

Lesson 88 Condensation 第88课 冷凝 When the water in a kettle boils, it boils first at the bottom. 当水壶中的水沸腾时, 首先开始沸腾的是底部的水。 We cannot see this in a kettle, because the kettle is made of iron. 我们无法

商务口语第67讲:制造工程(2)

1.Computer-Aided Manufacturing(CAM) 计算机辅助制造 A: Is CAM used in China? B: Yes，it has been uesd in China for almost twenty years. A：在中国有使用CAM的吗？ B：有啊，在中国使用已经将近20年了。 2.Hot working 热加工 A: What are the hot working proc

电信专业英英词典D-4

D type Channel Bank A D type channel bank is channel termination equipment used for combining (multiplexing) individual analog channel signals on a time division basis. D type channel banks provide in

英文摇滚歌曲：5 Seconds Of Summer - Vapor

I'll take what you got got got I know it's not a lot lot lot Cause I just need another hit You're the thing that I can't quit You got what I want want want Here and then you're gone gone gone If you told me that we were through You know that I would

VOA标准英语2010年-CPR Works Without Mouth-to-Mouth

Study finds chest compressions are the real life-saver Art Chimes | St. Louis, Missouri 29 July 2010 Cardiopulmonary resuscitation, or CPR, has been around in its modern form for about 50 years. Its rhythms of chest compressions and mouth-to-mouth br

英国学生科学读本 第70期:蒸发作用(1)

Lesson 70 Evaporation 第70课 蒸发作用 Let us fill a small kettle with water, and place it on the fire. The water will soon begin to boil. After an hour or so we shall find the kettle quite empty, although no one has touched it since it was plac

英国学生科学读本 第70期:蒸发作用(2)

The finger which is wet with alcohol will be dry before you can count ten, while the finger which is wet with water may take a minute or more to dry. 在你数到十之前, 那根沾有酒精的手指就会变得干燥, 而另外一根沾有水的手指

Vape 牛津词典评出2014年度热词

As 2014 draws to a close, its time to look back and see which words have been significant throughout the past twelve months, and to announce the Oxford Dictionaries Word of the Year. Without further ado, we can exclusively reveal that the Oxford Dict

The Worrler of Qi

The Worrler of Qi A man of the state of Qi was afraid that the sky would fall down and the earth would cave in．The thought that he would not be able to find shelter when that happened worried him so much that he had no appetite for food and slept v

英国学生科学读本 第35期:蒸汽往上冒(1)

Lesson 35 Getting up Steam 第35课 蒸汽往上冒！ Do you want to know what steam is? Let us get a lump of ice, or a snow-ball, and place it in a saucer in a warm room. It soon melts, and then the saucer is half full of water. If we leave the sau