离散一致性

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

发表于:2018-12-24 / 阅读(143) / 评论(0)

Scientific American(二)月

考研英语：写作出彩，积累亮点词汇

相信大家基础阶段的复习都在紧锣密鼓地进行着，但是你的复习过程中可能就存在着一个容易忽略的问题积累亮点词汇。什么意思？这阶段大家一定是在加大强度的背单词、做阅读，就有可能

发表于:2019-01-03 / 阅读(114) / 评论(0)

考研英语

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

发表于:2019-01-07 / 阅读(99) / 评论(0)

英语语法 Grammar Girl

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

发表于:2019-01-08 / 阅读(95) / 评论(0)

英语小短文

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

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美国偶像 American Idol

TED演讲:动物有语言吗(1)

All animals communicate. 所有动物都会相互交流。 Crabs wave their claws at each other to signal that they're healthy and ready to mate. 螃蟹相互挥舞钳子表明它们健康并准备交配。 Cuttlefish use pigmented skin cells called

发表于:2019-01-17 / 阅读(102) / 评论(0)

TED演讲教育篇

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

发表于:2019-01-18 / 阅读(133) / 评论(0)

英语单词大师-Word Master

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

发表于:2019-01-27 / 阅读(147) / 评论(0)

经济学人文艺系列

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

发表于:2019-01-31 / 阅读(113) / 评论(0)

英语新闻

2016考研英语：写作出彩，积累亮点词汇

发表于:2019-02-01 / 阅读(87) / 评论(0)

考研英语

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

发表于:2019-02-01 / 阅读(99) / 评论(0)

实用英语

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

发表于:2019-02-01 / 阅读(102) / 评论(0)

听歌学英语

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

发表于:2019-02-05 / 阅读(124) / 评论(0)

实用英语

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

发表于:2019-02-07 / 阅读(132) / 评论(0)

实用英语

万物简史第224期:把铅撵出去(13)

His main work done, Patterson now turned his attention to the nagging question of all that lead in the atmosphere. He was astounded to find that what little was known about the effects of lead on humans was almost invariably wrong or misleadingand no

发表于:2019-02-17 / 阅读(78) / 评论(0)

万物简史

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

发表于:2019-02-17 / 阅读(92) / 评论(0)

考研英语

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

发表于:2019-02-17 / 阅读(107) / 评论(0)

阅读空间

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

发表于:2019-02-18 / 阅读(196) / 评论(0)

阅读空间

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

发表于:2019-03-04 / 阅读(175) / 评论(0)

TED演讲教育篇

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

发表于:2019-03-04 / 阅读(124) / 评论(0)

TED演讲教育篇

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