[网络] 固火箭发动机

7-12 美国航空航天局成功试飞超高音速喷气机

NASA Successfully Tests Hypersonic 1 Jet Three years after its first test flight ended in an explosion, NASA on March 27 successfully launched an experimental jet that the agency believes reached a re

发表于:2018-12-05 / 阅读(69) / 评论(0)

英语沙龙2004全年合辑下

河北加拿大版初中英语--Lesson 27

Lesson 27: [00:03.58]Let's Do an Experiment! [00:07.24]One Experiment,Two Theories [00:11.81]A theory is an idea.A theory predicts what will happen. [00:18.57]An experiment shows what happens. [00:23.25]BRIAN:Did you read about this experiment,Danny?

发表于:2018-12-13 / 阅读(159) / 评论(0)

河北加拿大版初中英语

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

发表于:2018-12-18 / 阅读(53) / 评论(0)

英国学生科学读本

高频英语口语对话第514期:探望同事

unit 571 探望同事 dialogue 英语情景对话 A:Excuse me. Could you give me the room number of Mr. Thomas? A:劳驾，请问托马斯先生住在那个病房？ C:Just a moment. He is in Room 307. C:稍等，他在307号病房。 A:How are you f

发表于:2018-12-26 / 阅读(267) / 评论(0)

高频英语口语对话

【英语时差8,16】太空垃圾

Last time we talked about how astronauts eat and drink under weightless conditions in space. Today we'll cover the next question kids love to ask-how do astronauts go to the bathroom in space? It may sound silly, but it's really a good question, beca

发表于:2018-12-27 / 阅读(56) / 评论(0)

英语时差8，16

英语听力文摘 English Digest 613、酸奶中的神秘液体

The Mysterious Liquid In Yogurt When you open a container of yogurt, youll often see liquid collected on top. Some people mix it back into the yogurt, and others drain it off. What is it, and where does it come from? To solve the mystery of the liqui

发表于:2018-12-31 / 阅读(54) / 评论(0)

英语听力文摘 English Digest

英语听力文摘 English Digest 598、宇航员如何在太空中上厕所？

It may sound silly, but its really a good question, because weightlessness does make a visit to the latrine a tricky proposition. Weightlessness poses two main problems in the bathroom. The first is that an astronaut could drift away from the bowl at

发表于:2018-12-31 / 阅读(61) / 评论(0)

英语听力文摘 English Digest

UNIT 4 Look into Science! Lesson 32: Unit Review

[ti:UNIT 4 Look into Science! Lesson 32: Unit Review] [0:00.000]UNIT 4 [0:01.873]Look into Science! [0:04.086]Lesson 32 [0:05.447]Unit Review [0:07.036]Ⅰ. Building Your Vocabulary [0:10.383]A. Fill in each blank with the proper word or phrase from

发表于:2019-01-09 / 阅读(248) / 评论(0)

河北教育初中英语（初中起点）八年级下册

与美国小学生一起学英文第8册第6期:岩浆

Magmas 岩浆 Have you heard about liquid rock? 你听说过液态岩石吗？ It might sound funny to you. 这听起来可能很好笑。 How can a rock be liquid? While it can be. 岩石怎么可能是液体呢？但有时它还真是。 If the tem

发表于:2019-01-10 / 阅读(78) / 评论(0)

与美国小学生一起学英文第8册

与美国小学生一起学英文第5册第11期:气体

Gas 气体 There are three different kinds of matter. They are solids, liquids and gases. 物质分三种：固体、液体和气体。 Gas has no shape, so you can't touch gas. 气体本无形，所以你触摸不到。 Gas moves very freely. 气体能

发表于:2019-01-10 / 阅读(67) / 评论(0)

与美国小学生一起学英文第5册

跟动名词做宾语的动词

归纳拓展跟动名词作宾语的动词考虑建议盼原谅(consider/suggest/advise,look forward to, excuse, pardon) 承认推迟没得想（admit, delay/put off,fancy）避免错过继续练（avoid, miss, keep/keep on, practise）否认完成停

发表于:2019-01-16 / 阅读(65) / 评论(0)

英文语法词汇

TED演讲:为何番茄酱很难倒出来(1)

French fries are delicious. French fries with ketchup are a little slice of heaven. 我们都知道炸薯条很好吃，再配上番茄酱简直就是人间美味。 The problem is it's basically impossible to pour exactly the right amount. 但问题是

发表于:2019-01-17 / 阅读(68) / 评论(0)

TED演讲教育篇

TED演讲:为什么玻璃是透明的(1)

Take a look out your window, put on your glasses if you wear them. 向窗外张望一下，有必要的话，戴上眼镜。 You might want to grab a pair of binoculars, too, or a magnifying lens. 也许你还想拿副望远镜或是放大镜。 Now,

发表于:2019-01-17 / 阅读(57) / 评论(0)

TED演讲教育篇

英文原版对话1000个:1056 More Moon Hoax

Todd: Jonathan we are talking about conspiracy theories. What about the one where the sound? That when the rocket lands, they have actually audio of the rocket landing and you can't hear the rocket engine, and the rocket engine should be making a rea

发表于:2019-01-20 / 阅读(60) / 评论(0)

原版英语对话1000个

经济学人39:怎样建造时速1000英里的汽车

The land-speed record 地面速度记录 How to build a 1,000mph car 怎样建造时速1000英里的汽车 Hybrid rocketry will be used to drive faster than ever before 混合火箭技术将用于更快地驱动车辆 May 5th 2011 | from the print ed

发表于:2019-01-26 / 阅读(69) / 评论(0)

经济学人综合

夏洛的网第115期:奇迹(6)

You know, he said, in an important voice, 你们知道，他用郑重其事的声音说， I've thought all along that that pig of ours was an extra good one. 我已经想通了，我们这只小猪是一只特级好猪。 He's a solid pig. That pig

发表于:2019-01-29 / 阅读(65) / 评论(0)

夏洛的网

物理学家、火箭专家戈达德•罗伯特

18 物理学家、火箭专家戈达德罗伯特 DATE=3-21-01 TITLE=EXPLORATIONS #1944 - Robert Goddard BYLINE=Staff VOICE ONE: This is Steve Ember. VOICE TWO: And this is Shirley Griffith with the VO

发表于:2019-01-30 / 阅读(58) / 评论(0)

文化聚焦

经济学人302:可重复使用的航天器乘喷气式火箭的乘客

Science and technology 科学技术 Reusable spacecraft 可重复使用的航天器 Jet-set rocket-man 乘喷气式火箭的乘客 A small British firm is working on a nifty new jet-rocket hybrid engine 英国一家小公司正在研发一款轻巧的新

发表于:2019-02-05 / 阅读(59) / 评论(0)

经济学人科技系列

Ariane 5 launch aborted due to technical hitch

BEIJING, Apirl 1 (Xinhuanet) -- An Ariane rocket launch of two communications satellites was aborted Wednesday after a technical hitch at the scheduled moment of liftoff in French Guiana on Wednesday. According to Arianespace, the Ariane 5 rocket's V

发表于:2019-02-06 / 阅读(113) / 评论(0)

英语新闻

经济学人:中国商业航天 (1)

The first rockets were Chinese. In the 1230s the armies of the Song dynasty, 首批火箭出现在中国。十三世纪三十年代，宋朝军队 who were fighting Mongol invaders, started launching fire arrows propelled by gunpowder some 300 metres

发表于:2019-02-16 / 阅读(93) / 评论(0)

经济学人科技系列

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