单词：cosmic-ray knock-on electrons
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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
TED演讲教育篇
[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
赖世雄学英语第四册
Hello!(Hello!)[ Wavewithyourrighthand .] Hello!(Hello!)[ Wavewithyourlefthand. ] Comein.[ Motiontocomeinside. ] Letssing.[ Pretendyouaresingingintoamicrophone .] Letsplay.[ Runinplace .] Hello!(Hello!)[ Wavewithyourrighthand. ] Hello!(Hel
Super Simple Songs 唱唱跳跳学美语
Knock Three Times Hey, girl, what you doing down thee? Dancing alone every night while I live right above you? I can hear your music playing; I can feel your body swaying. One floor below me, you don*
英文歌曲第四辑
今天要讲的三个习惯用语都是以sock这个字为主的。Sock就是我们脚上穿的袜子，可是当它和其他的词组成习惯用语之后，它的意思就不同了。 今天我们就为各位介绍一下三个：sock away。首先我
美国习惯用语
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
Scientific American(九)月
Linda's apartment intercom buzzed. She picked up the intercom phone. Hello, she said. The UPX man is coming up, said Julia. Julia worked at the front desk. Finally! Linda had been waiting two weeks to return a package. She took the package to the fro
英文短篇故事（纽约）
说一口流利的英语，从简单的单词开始。 听听，读读，背背，今天你的词汇量又增加了5个。 单词/词义 中英例句 单词听读 shorts [ FC:ts ] The one with a pair o
每日攻克5词
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
60秒科学
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。
TED演讲科技篇
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
TED演讲科技篇
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
VOA慢速英语2008年（十二）月
to pull your socks up to knock your socks off 许多美国成语或者习惯用语都是以各种衣服的名称来组成的。比如说,
美国习惯用语
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
TED演讲教育篇
Knock your socks off，“把你的袜子打掉”。如果连袜子都被人打掉了，那打得可真是不轻呦。由此可见，knock your socks off演变成“绝对性的胜利”的意思也就
英文语法词汇
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
People in America
今天我们要学的词是knock out。 Knock out, 有毁坏的意思。 The Japanese government is conducting stress tests on all its nuclear plants following the March earthquake disaster which knocked out the cooling systems at Fukushima, 三月地震
英语单词荟萃
To knock off 我们经常提到在学英文过程中不时会碰到一个困难,那就是一个英文字,或一个表达形式有好几种不同的意思。今天我们要给大家介绍的一个常用语
美国习惯用语
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
万物简史
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
万物简史