侏罗纪搏击俱乐部 第154期:牙齿适合用来切肉

It was a species of Tyrannosaur. 这是暴龙的一种。 That suggested to us, well, maybe these Tyrannosaur teeth are in fact from animals that are trampling the bodies of these things as they eat them. 那就表明，也许这些暴龙牙齿是它们

侏罗纪搏击俱乐部 第114期:阿尔伯特龙是原始的暴龙

These were big but really fast hunters. They were as bad as it got for a while. 这些巨大但速度很快的猎手。有一段时间它们要多坏有多坏。 Albertosaurus would have been a very fearsome predator. 阿尔伯特龙会是非常可怕的

侏罗纪搏击俱乐部 第113期:盛夏巅峰遭遇异常严重的旱灾

He's got a big, thick bull-dog head and it's perfectly designed for grasping prey and crushing it. 它有着牛头犬一样又大又壮的脑袋，其设计非常适合抓住并且咬碎猎物。 His teeth are also designed to take a lot more pressur

侏罗纪搏击俱乐部 第107期:地球上最恐怖的恐龙

Over the next 90 million years, a new era called the Cretaceous period dawned. 在接下来的九千万年里，开始了一个叫做白垩纪的新时期。 Broader-leaf plants that could tolerate seasonal weather changes covered the land. 能够忍受

学个词Learn a Word 第687期 Open-ended

今天我们要学的词是open-ended。 Open-ended, 没完没了的。美国总统奥巴马接受采访时表示，美国一定要寻找出路，最终结束在阿富汗的军事行动。 President Obama indicated that the military build-up in Afgha

马航失联客机在南印度洋坠毁

KUALA LUMPUR, March 24 (Xinhua) -- New analysis of satellite data suggested that missing Malaysia Airlines Flight MH370 had crashed in the southern Indian Ocean, Malaysian Prime Minister Najib Razak said on Monday. Najib released the sad news at a ha

万花筒 2010-01-30&01-31 iPad真的那么牛？

So after months of rumors and speculation, the wraps have finally come off Apple's latest big idea. At a launch in San Francisco, the iPad was fanfared with typical Apple hype. It's unbelievably great, way better than a laptop, way better than a smar

英国文化：英格兰湖区 牧羊人过着令人着迷的生活

The Herdwick Shepherd, James Rebanks, is the latest of several generations to have tended flocks in the Lake District, but he now has a book and 45,000 Twitter followers entranced by the starkly beautiful scenes he photographs every day. Here he expl

与美国小学生一起学英文第4册 第6期:月球

Moon 月球 Do you have any idea how big the moon is? 你知道月球有多大吗？ The moon's radius is 1737 kilometers. 月球的半径长1737千米。 This is just one fourth of our Earth. 它的半径仅仅是地球半径的四分之一。 The d

美国国家公共电台 NPR Double, Double

Double, Double play pause stop mute unmute max volume 00:0005:28repeat repeat off Update Required To play the media you will need to either update your browser to a recent version or update your Flash plugin. OPHIRA EISENBERG, HOST: Now it's time to

美国国家公共电台 NPR How Do Eggs Get Their Shapes? Scientists Think They've Cracked It

KELLY MCEVERS, HOST: One of nature's most efficient life support systems is the egg. And over millions of years, eggs have taken on lots of different shapes, especially among birds. Biologists have been trying to figure out for a long time why that i

乔布斯传 第118期:像保时捷那样

Like a Porsche 像保时捷那样 Jef Raskin's vision for the Macintosh was that it would be like a boxy carry-on suitcase, 杰夫拉斯金设想中的麦金塔电脑就像一只四四方方的手提箱， which would be closed by flipping up the key

PBS高端访谈:为什么爱荷华的禽流感爆发的如此猛烈?

HARI SREENIVASAN: As we reported yesterday, the nation's largest egg-producing state, Iowa, has declared a state of emergency following a major outbreak of the avian flu. Millions of chickens and turkeys there and in Wisconsin and Minnesota have been

VOA标准英语2011--Innovative Electric Aircraft Win Green F

Innovative Electric Aircraft Win Green Flight Challenge We often hear about hybrid cars, which run in part on electricity and can travel about 20 kilometers on a liter of fuel. Engineers are also experimenting with another mode of electric transporta

时代周刊盘点年度十大发明：这才叫终极创造力

每年，《时代周刊》都选出让世界更美好、更智能、更有趣的发明。今年的也能让你大吃一惊哦！ 1.The Levitating Lightbulb 1.悬浮灯泡 Since he was a child, Simon Morris has been obsessed with making objects float

英格兰湖区牧羊人 45000人为之着迷的生活

The Herdwick Shepherd, James Rebanks, is the latest of several generations to have tended flocks in the Lake District, but he now has a book and 45,000 Twitter followers entranced by the starkly beautiful scenes he photographs every day. Here he expl

China to expand food contaminant monitoring

BEIJING, Jan. 25 (Xinhua) -- China has set a goal of equipping at least half of the country's county-level administrative regions to monitor various contaminants and harmful ingredients in food by the end of 2013. A new work plan, released on Friday

传闻iPhone8将配置5.8英寸屏幕 价格历史最高

A new report has revealed that Apple plans to launch three handsets this year - two will be updates of the iPhone 7 family and the third is the 10th-anniversary handset -- iPhone 8. 一份最新报告显示，苹果公司计划今年推出3部手机-

乔布斯传 第421期:消灭兼容机(3)

Apple resisted licensing out the Macintosh operating system until 1994, 苹果一直拒绝把麦金塔的操作系统授权出去，直到1994年， when CEO Michael Spindler allowed two small companies, Power Computing and Radius, to make Macintosh

北京城市副中心等场所将于2020年率先使用5G网络

Beijing expects to implement the pre-commercial service of the 5th generation mobile networks, or 5G, in key locations by 2020, according to a development plan on big data and cloud computing released by the municipal government. 北京市政府近日发