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科学美国人60秒 SSS 2014-2-24

It was the largest of the five major mass extinctions in earth's history, well before the dinosaur killer 66 million years ago. What's called the end Permian extinction 252 million years ago, wiped out 96% of aquatic species and 70% of species on lan

发表于:2018-12-24 / 阅读(44) / 评论(0) 分类 2014年Scientific American(二)月

英文书摘精选 地球的引力改变过吗?

Has Earths Gravitational Pull Been Changing? 地球的引力改变过吗？ Don, why are you slouching? Dont you know its bad for you? 唐，为啥你无精打采？你不知道这对你不好？ Did you know that about 200 tons of debris strike the

发表于:2018-12-28 / 阅读(48) / 评论(0) 分类 初学者听力文摘精选

英文书摘精选 千金难买老来瘦

Think back to your college days, the good old days when life was easy. Stay up all night partying or even studying? No problem. Eat pizza every night and plow through entire bags of potato chips at one sitting. Hey, no sweat. You were a lean, mean, a

发表于:2018-12-28 / 阅读(46) / 评论(0) 分类 初学者听力文摘精选

侏罗纪搏击俱乐部 第164期:渡河时发生大屠杀

When the Pachyrhinosaurus bodies came to the bend in the river the momentum of the water push their carcasses to the outer edge of the bend. 当肿鼻角龙的尸体来到河流的转弯处，水流的动力将它们的尸体冲向河流转弯处外缘

发表于:2018-12-28 / 阅读(44) / 评论(0) 分类 侏罗纪搏击俱乐部

英语听力文摘 English Digest 636 地心引力为何对我们有好处

Why Is Gravity Good For Us? When astronauts return from long missions in space, their exit from the spacecraft is usually hidden from public view. This is because after several months in weightless conditions, things we usually take for granted, such

发表于:2018-12-31 / 阅读(65) / 评论(0) 分类 英语听力文摘 English Digest

早读英语精华本下册 Unit17

Stay Thin By Sleeping More A study published Monday found that people who sleep less tend to be fat, and experts said it's time find if more sleep will fight obesity. We've put so much emphasis on diet and exercise that we've failed to recognize the

发表于:2019-01-02 / 阅读(44) / 评论(0) 分类 早读英语精华本

麻省理工学院公开课：单变量微积分01：导数和变化率

分集介绍：导数，斜率，速度与变化率 Derivatives.slope.velocity.rate.of.change

发表于:2019-01-05 / 阅读(310) / 评论(0) 分类 麻省理工学院公开课：单变量微积分

2005年NPR美国国家公共电台九月-E=mc² at 100

One hundred years ago today, September (the) 27th, 1905, a physics paper was dropped into the mail, addressed to a German journal called AT. The paper was penned by a 26-year-old Swiss patent clerk with dark curly hair years before he sprouted that s

发表于:2019-01-08 / 阅读(141) / 评论(0) 分类 2005年NPR美国国家公共电台

美联社新闻一分钟 2006-08-04

1. Again today the National Weather Service has posted heat warnings from Massachusetts to South Carolina. Electricity demands set records in some areas and scattered power outages have been reported.

发表于:2019-01-08 / 阅读(109) / 评论(0) 分类 美联社新闻一分钟2006

美联社新闻一分钟 AP 2015-1-21

This is AP News Minute Kentucky authorities say twoteen sweethearts suspected in a crime spree of stolen vehicles and pilferedchecks have finally been apprehended in Florida. The modern-day Bonnie andClyde duo began their run from the law and their f

发表于:2019-01-11 / 阅读(148) / 评论(0) 分类 美联社新闻一分钟2015(一)月

美联社新闻一分钟 AP 2015-10-06

This is AP News Minute. 1. Pope Francis concluded his trip to the US by celebrating mass in front of hundreds of thousands of people in Philadelphia Sunday. The mass was the last stands biggest event on the popes itinerary as he kept ten-day tour of

发表于:2019-01-11 / 阅读(104) / 评论(0) 分类 美联社新闻一分钟2015(十)月

VOA标准英语2013--Maryland Community Becomes Patron of the Arts

Maryland Community Becomes Patron of the Arts Vicco von Voss has been making wooden furniture from salvaged materials for 20 years. When I get a tree that has been blown over by a hurricane or strictly taken down by a tree company, I have the opportu

发表于:2019-01-14 / 阅读(57) / 评论(0) 分类 VOA标准英语2013年(七月)

偶像励志英语演讲 第100期:如何解决这个世界最严重的不平等(10)

Still, I'm optimistic. Yes, inequity has been with us forever, but the new tools we have to cut through complexity have not been with us forever. They are new-they can help us make the most of our caring-and that's why the future can be different fro

发表于:2019-01-18 / 阅读(68) / 评论(0) 分类 偶像励志英语演讲

美国科学60秒 SSS 2013-05-13

This is Scientific American's 60-second science. I'm Carrie Haphgn. Just take a minute. It's tough to have a job with the bosses always riding you. That's literally the case with horse. Now a study finds that the stress experience by the acquire s co

发表于:2019-01-20 / 阅读(68) / 评论(0) 分类 Scientific American(五)月

英语听力：2013-10-02 地平线：黑洞吞噬—6

The mystery of what could count for the quasars' extraordinary brightness was the hot topic in astronomy during the 1960s. As astronomers began to grapple with the new enigmatic objects that had been found by the radio telescopes, one astronomer, kee

发表于:2019-01-23 / 阅读(52) / 评论(0) 分类 探索与发现2013年

万物简史 第77期:事物的测定(25)

When assembled, Michell's apparatus looked like nothing so much as an eighteenth-century version of a Nautilus weight-training machine. It incorporated weights, counterweights, pendulums, shafts, and torsion wires. 装配完毕以后，米歇尔的仪器

发表于:2019-01-29 / 阅读(42) / 评论(0) 分类 万物简史

陨落星辰第一季 第93期:克莱顿给迈克洗脑

I always liked you, Mike. 迈克，我一直很欣赏你 That's why I'm gonna talk and you're gonna listen. 所以你听我说 Eli Russell. 伊莱罗素 Short answer? He was here. 简短的回答，他来过这儿 What's the long answer? 那长篇大论

发表于:2019-01-29 / 阅读(91) / 评论(0) 分类 陨落星辰第一季

【英语时差8，16】人到中年

Let's say you're an eighteen-year-old male who runs every other day, logging 12 miles a week. Now fast-forward to your late 40s. Your eating habits are the same. To maintain your high school weight, how many miles a week would you need to run? Believ

发表于:2019-02-15 / 阅读(48) / 评论(0) 分类 英语时差8，16

经济学人:自由交流:"无人驾驶"带来巨大商机(2)

That might lead to a different kind of dystopia (also with historical antecedents): one in which fast, functional transport is available only to those who can pay. 这可能会去往一个不同的非理想之地（也有历史先例）：在那里，快

发表于:2019-02-17 / 阅读(45) / 评论(0) 分类 经济学人财经系列

英语听力精选进阶版 6243

Souvenirs for Kate and William's Royal Wedding Go On Sale 威廉王子和凯特的王室婚礼纪念品上市销售 Fans of the British Royal family around the world are making plans for April 29th 2011. That's the date that Prince William and Kate M

发表于:2019-02-21 / 阅读(47) / 评论(0) 分类 英语听力精选进阶版
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