电子束

Is He a Hero?

Lesson 5 Is He a Hero? Text A

发表于:2018-11-27 / 阅读(423) / 评论(0)

新概念英语青少版

TED演讲:原子究竟有多小?(2)

So if you popped open the blueberry and were searching for the nucleus 如果你在蓝莓的内部搜索原子核，结果是一无所获。 You know what? It would be invisible. It's too small to see! 知道为什么吗？因为我们看不到它！它

发表于:2018-12-08 / 阅读(195) / 评论(0)

TED演讲教育篇

赖世雄学英语第四册 lesson 4

[00:00.00]Lesson 4 Atom [00:01.95]原子 [00:03.89]The really strange thing about atoms is that most of us will never see one. [00:08.87]原子最奇特之处在于绝大多数人永远也无法看到它。 [00:13.84]Atoms are so small that it's impo

发表于:2018-12-08 / 阅读(196) / 评论(0)

赖世雄学英语第四册

SSS 2011-09-27

This is Scientific American's 60-Second Science. I'm Sophie Bushwick. Got a minute? The shortest distance between two points may be a straight line, but try telling that to electrons: when current flows down a wire, these particles zig and zag, movin

发表于:2018-12-24 / 阅读(255) / 评论(0)

Scientific American(九)月

英语听力文摘 English Digest 655 富兰克林与他的毛皮实验

Ben Franklin And A Very Furry Situation When they hear the name Ben Franklin, many folks think of the Declaration of Independence, the Continental Congress and things like that. Not as many people remember that Franklin was an inventor . . . and a go

发表于:2018-12-31 / 阅读(170) / 评论(0)

英语听力文摘 English Digest

商务英语词汇行销：商展

[00:03.81]bottom line :结余；结算 [00:05.82]bundle :n.搭售商品 [00:07.49]convention :n.(专业)展览会 [00:09.37]demonstration :n.展示 [00:11.46]entrance :n.入口 [00:13.29]go with :选择；决定采用 [00:15.17]high traffic :a.高流量

发表于:2018-12-31 / 阅读(338) / 评论(0)

商务英语分类核心1000词汇

100个儿童英语小故事: A Bundle of Sticks

090 A Bundle of Sticks There once lived three greedy brothers in a town. Everyday, three brothers fought to get more things. One day, their father called them out to reason with them, Sons, stop fighting with each other. However, they still remained

发表于:2018-12-31 / 阅读(373) / 评论(0)

100个儿童英语小故事

60秒科学:Forcing Electrons into Superconducting Line

Forcing Electrons into Superconducting Line In a study in the journal Nature researchers created a pseudo gap, in which electrons in superconducting materials line up just before flowing resistance-free. Sonya Buyting reports Imagine a world with lev

发表于:2019-01-02 / 阅读(355) / 评论(0)

60秒科学

TED演讲:一项关于电动车的大胆计划(4)

You, today, buy gasoline miles. And we created electric miles. 现在大家买的是汽油里程。我们就创造电子里程。 And the price of electric miles ends up being a very interesting number. 电子里程价钱加起来是个有趣的数字。

发表于:2019-01-03 / 阅读(198) / 评论(0)

TED演讲科技篇

TED演讲:一项关于电动车的大胆计划(1)

So how would you run a whole country without oil? 怎么让一个国家在没有用石油的情况下运转？ That's the question that sort of hit me in the middle of a Davos afternoon about four years ago. 四年以前在Davos的一个下午，这个

发表于:2019-01-03 / 阅读(185) / 评论(0)

TED演讲科技篇

VOA慢速英语 2008 1207

VOICE ONE: I'm Phoebe Zimmermann. VOICE TWO: And I'm Steve Ember with People in America in VOA Special English. Today we tell about a man who made possible one of the most important communications devices ever created -- television. His name was Phi

发表于:2019-01-11 / 阅读(290) / 评论(0)

VOA慢速英语2008年（十二）月

美国习惯用语:347 A bundle of nerves

我们上次讲了几个以nerve这个词为主的习惯用语。Get up the nerve或者work up the nerve，它们解释鼓起勇气去做艰难甚至危险的事情。我们还学了have got a lot of nerve和of all the nerve这两个习惯用语都用来

发表于:2019-01-16 / 阅读(251) / 评论(0)

美国习惯用语

TED演讲:为什么玻璃是透明的(2)

But this still doesn't explain why light is able to pass through glass rather than being absorbed as with most solids. 但是这还是不能解释为什么光可以穿透玻璃而不是像其他大多固体那样被吸收。 For that, we need to go a

发表于:2019-01-17 / 阅读(235) / 评论(0)

TED演讲教育篇

分类词汇：电信

CDMA 码分多址 WCDMA 宽带码分多址 TD-SCDMA 时分同步码分多址接入 churn rate 客户流失率 walled garden model 高墙式花园模式 POC 手机对讲 IM service instant messaging service 即时通讯服务 bundle service 捆绑式服

发表于:2019-01-17 / 阅读(193) / 评论(0)

英文语法词汇

Eztalk美语【188】Bundle up多穿一点衣服

The next morning Lily:Morning, Mom. [coughs and sniffles] Mom:I made a doctor's appointment for you. Lily:No, I'm fine. I don't need to see a doctor. Mom:Then I guess you're healthy enough to clean your room before school. Lily:OK. I'll go see the do

发表于:2019-01-21 / 阅读(269) / 评论(0)

Eztalk美语会话

PEOPLE IN AMERICA - Philo Farnsworth

PEOPLE IN AMERICA - Philo Farnsworth By Paul Thompson Broadcast: Sunday, June 06, 2004 (MUSIC) VOICE ONE: I'm Phoebe Zimmermann. VOICE TWO: And I'm Steve Ember with People in America in VOA Special En

发表于:2019-01-30 / 阅读(259) / 评论(0)

People in America

The Bundle of Sticks

A man once had four sons who never stopped quarrelling withone another．He was always telling them how much easier life wouldbe if they worked together but they took absolutely no notice of him．One day he decided to show them what he meant．He ca

发表于:2019-02-05 / 阅读(233) / 评论(0)

趣味英语

万物简史第202期:威力巨大的原子(16)

It was while puzzling over this problem that Bohr was struck by a solution and dashed off his famous paper. Called On the Constitutions of Atoms and Molecules, the paper explained how electrons could keep from falling into the nucleus by suggesting t

发表于:2019-02-17 / 阅读(180) / 评论(0)

万物简史

“紧张兮兮”怎么说？

A bundle of nerves / nervous Nellie 上次我们讲了几个跟nerve有关的习惯用语：Get up the nerve，have got a lot of nerve和of all the nerve。我们今天再学习两个nerve短语。第一个是: a bundle of nerves。 Bundle意思是一束

发表于:2019-02-22 / 阅读(182) / 评论(0)

英语口语

万物简史第198期:威力巨大的原子(12)

Let us pause for a moment and consider the structure of the atom as we know it now. Every atom is made from three kinds of elementary particles: protons, which have a positive electrical charge; electrons, which have a negative electrical charge; and

发表于:2019-02-25 / 阅读(292) / 评论(0)

万物简史

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