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

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

VOA标准英语2013--Merchants Put New Spin on Advertising

Merchants Put New Spin on Advertising He has been spinning signs for five years. There is a lot of money being made in advertising, he says. The income, however, is not the only reason Moreno loves his job. I have the most fun doing what Im doing, he

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

英文书摘精选 积极的想法与豁达的心态

Think Positive And Feel Positive 积极的想法与豁达的心态 When youre in a stressful situation, are you confident or insecure? Do you react positively or negatively? 当你身处压力时，你是自信满满还是不知所措？是行动更积

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

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

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。

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

鹅妈妈童谣 76 Six Little Mice Sat Down to Spin

Six Little Mice Sat Down to Spin Six little mice sat down to spin, Pussy passed by, and she peeped in. What are you doing, my little men? Making coats for gentlemen. Shall I come in and bite off your threads? No, no, Miss Pussy, you'll bite off our h

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

每日一词【394】spin：旋转，耍政治手腕

今天我们要学的词是spin。 Spin, 是旋转。The skater is practicing her jumps and spins, 不过spin 这个词要是用到政治上，那就有别的意思了。比如：'Spin wars' are expected for Obama and Clinton, 有人说，奥巴马和希

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

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

学个词Learn a Word 第1697-exclusion

今天我们要学的词是exclusion。Exclusion 意思是排除在外。The Boy Scouts of America will consider ending its policy of exclusion of gay leaders and scouts. 美国童子军将考虑取消禁止同性恋加入童子军或是担任童子军

英语词汇大全：Paired words

heart and soul 一心一意 ebb and flow 人世盛衰 cloak and dagger 秘密的行动 law and order 秩序 move heaven and earth 不遗余力 part and parcel 不可或缺 pomp and ceremony 盛典 rain or shine 不论如何 rank and file 大众 (figh

夏说英语新闻晨读 第243期:伦敦城市指数排名下降

本期内容： A rise in global nationalism paired with a worldwide drop in oil prices has brought about significant shifts in the global economy over the past year. As a result of these developments, certain destinations that have long been some of

美国习惯用语:397 advance man; spin doctor...

如今的竞选意味着花费几百万美元作电视广告，邮寄宣传印刷品。候选人也得和数以千计的志愿工作人员日以继夜地四处奔波。今天先学两个表示现代助选人员的习惯用语。第一个是：advance

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

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