双极脉脉冲

Electric Fish 发电鱼 One way that Harold Zakon and his team find fish to study is to put electrical detectors into the bottom of murky streams in Venezuela. This works because certain fish emit pulses of electricity. Discover electric fish -- on tod

发表于:2018-12-07 / 阅读(126) / 评论(0) 分类 (科普英语)Earth and Sky

RACHEL MARTIN, HOST: We try not to obsess about this too much, but we really do get to work very early around here. We don't get a whole lot of sunlight, especially in the winter months. So when you look around the newsroom, you see these special lam

发表于:2018-12-17 / 阅读(111) / 评论(0) 分类 2017年NPR美国国家公共电台11月

Next, the U.S. Army is on a mission to recruit 80,000 new soldiers by next year. It's easier said than done. Many people don't meet the military's requirements to join. Weight, age, drug use, medical conditions, criminal records, they can all keep so

发表于:2018-12-20 / 阅读(114) / 评论(0) 分类 CNN美国有线新闻2017年12月

歌词: I wanna make your heart beat I love it when it beats for me, yeah I wanna make your heart beat I love it when it beats for me, yeah I wanna raise pulses La chica with the most-est Not in the mood for the average Josephs Coming unglued, baby

发表于:2019-01-03 / 阅读(118) / 评论(0) 分类 流行英文歌曲

By Ravi Khanna Washington, DC 07 February 2008 The American Folklife Center of the Library of Congress in Washington featured Indo-Caribbean drumming and dancing at a recent performance. The center has been featuring traditional ethnic and regional m

发表于:2019-01-07 / 阅读(101) / 评论(0) 分类 VOA常速英语2008年(二月)

He was sure that when a supernova exploded, it left behind a kernel so dense that a cupful would be as heavy as a mountain, he called it a neutron star, it seems so preposterous that Z's ideas were dismissed, until that is a new way of scouring the h

发表于:2019-01-23 / 阅读(132) / 评论(0) 分类 探索与发现2015年

美帝夫妻档 Karmin 新单曲《Pulses》!如果你对 Karmin 的印象还停留在《Acapella》,那么这次的《Pulses》可就要你大吃一惊了。巨肺姐 Amy Heidemann 不仅能飙高音,玩儿起说唱时的强大气场也绝对力

发表于:2019-02-11 / 阅读(102) / 评论(0) 分类 英文最新流行歌曲

Voice 1 Hello. Im Rachel Hobson. Voice 2 And Im Mike Procter. Welcome to Spotlight. This programme uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. Voice 3 I was in the tent

发表于:2019-02-14 / 阅读(123) / 评论(0) 分类 环球英语 Spotlight
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