Stephen Hawking on Black Holes

By their very definition,black holes are 1) objects which are not supposed to 2) emit anything .It therefore seemed that the area of the 3) event horizon of a black hole could not be regarded as its 4

SSS 2008-02-25

Transcript This is Scientific American's 60-Second Science, I am Cynthia Graber.This will just take a minute. Physicists at the Brookhaven National Laboratory have been able to send information ahead of particle beams racing at nearly the speed of li

英语语法：64 If Versus Whether

Grammar Girl here. Today's topic is whether--not rain or sunshine, but whether w-h-e-t-h-e-r, as in whether you like it or not, it's the topic. [Listener question about if versus whether and whether you need an or not after whether] Well, it's been a

克服演讲紧张的5种方法

Most people feel nervous prior to giving a speech. This is human nature and indeed some degree of nerves is absolutely essential to remain alert and deliver the speech clearly. However nerves do become a problem if they are debilitating in any way. T

美国偶像 Everybody Knows

Everybody knows that the dice are loaded 每个人都知道骰子被灌了铅 Everybody rolls with their fingers crossed 每个人都知道跟着他们手指的方向走 Everybody knows that the war is over 每个人都知道战争已经结束 Everyb

英语歌曲:Travis--colder~~

Travis--colder~~ i'm in love with everything with every face i've ever seen and every place i've ever been has left its mark upon my worries i color in the world i see i pick apart the melody 'cause maybe there's a symphony caught inside but there's

TED演讲:为什么油水不能混合(1)

Why does salt dissolve in water but oil doesn't? 为什么盐可溶于水而油却不行呢？ Well, in a word,chemistry. But that's not very satisfied, isn't it? 总的来说，是化学作用。但这并不令人满意，对吧？ Well, the reason

英语单词大师：Learners in U.S.

AA: I'm Avi Arditti with Rosanne Skirble, and this week on Wordmaster: new standards for English learners in American public schools. RS: One in nine public school students is a non-native English speaker; in twenty years, it could be one in four. Th

经济学人111:腹地美景 A hinterland beauty

Books and Arts; American art museums; A hinterland beauty; 文艺；书评；美国艺术博物馆; 腹地美景; Moshe Safdie and some intelligent curatorial work have produced a rural gem; 摩西萨夫迪和一些聪明的策展工作创造了一个田

万物简史 第159期:爱因斯坦的宇宙(2)

In 1875, when a young German in Kiel named Max Planck was deciding whether to devote his life to mathematics or to physics, he was urged most heartily not to choose physics because the breakthroughs had all been made there. The coming century, he was

德国杂志揭示了美国国家安全局黑客入侵手段

德国杂志揭示了美国国家安全局黑客入侵手段 LONDON - A German magazine lifted the lid on the operations of the National Security Agency's hacking unit Sunday, reporting that American spies intercept computer deliveries, exploit hardw

大数据如何影响中国娱乐业

A major conference, The 2015 Conference on Big Data Index of Culture and Entertainment Industry, was held on Friday in Beijing, during which awards were given to the most talked about TV series, online dramas, movies and variety shows in China. Stand

听歌学英语：众所周知 Everybody Knows

Everybody knows that the dice are loaded 每个人都知道骰子被灌了铅 Everybody rolls with their fingers crossed 每个人都为自己的命运捏了一把汗 Everybody knows that the war is over 每个人都知道战争已经结束 Everybody

微电子辞典-4

Dangling bonds 悬挂键 Dark current 暗电流 Dead time 空载时间 Debye length 德拜长度 De.broglie 德布洛意 Decderate 减速 Decibel (dB) 分贝 Decode 译码 Deep acceptor level 深受主能

战胜抑郁你能行

You Can Beat Depression by William Thomas Buckley Depression has always been considered a disease of life's middle or later years, but doctors are now reporting a surprising surge in cases among younger people. Why is depression striking earlier and

考研英语完形填空高分实战策略

考研 http://www.kuakao.com/完型，大家都非常熟悉的题型，但在这一部分，真正得高分同学非常少，因为它非常难。难就难在我们大家必须要掌握雄厚的语言基础实力和理解上下文语句的逻辑推理和

男人每隔多久就会“性”趣盎然？

It's a stat that gets bounced around as e-mail-forward wisdom: men think about sex every seven seconds. Even when the idea lacks this mythical specificity and grandiosity (that's 7,200 times a day!), the idea that men think about sex basically all th

1959: The Year That Changed Everything

1959: The Year That Changed Everything A crowd gathers in New York's Times Square to usher in the New Year, 1959. The importance of what future met them that year is still being debated. How Significant Will 2009 Appear in the Lens of History? Jeff G

TED演讲：重新定义字典(1)

Now, have any of y'all ever looked up this word? 好，你们中有谁查过这个单词？ You know, in a dictionary? Yeah, that's what I thought. 用字典？是的，我想也就这个样子。 How about this word? Here, I'll show it to you. 这个单

TED演讲:一段精神疾病的传奇--从内心看起(5)

For years, I had resisted medication, making many, many efforts to get off. 这些年来，我一直反对用药，为此会付出一切。 I felt that if I could manage without medication, 我感觉到我不服用药物也可以保持 I could prove