瞬发γ辐射, 瞬发加马辐射

听电影学英语-街舞少年 19

[00:10.30]And now for the winner of this year's... 现在今年的赢家就是... [00:11.58]...National Fraternity Step Team Champions.... ...全国男子街舞大赛的冠军队伍是.... [00:18.02]We have a tie. 打成平手 [00:21.02]Now, l kno

发表于:2018-12-07 / 阅读(75) / 评论(0)

听电影学英语-街舞少年

VOA常速英语2015--墨西哥建造伽马射线天文台即将开放

Gamma Ray Observatory to Open Soon in Mexico 墨西哥建造伽马射线天文台即将开放 American and Mexican scientists have completed construction of the world's largest gamma ray observatory, situated high in central Mexicos Sierra Negra Moun

发表于:2018-12-16 / 阅读(34) / 评论(0)

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Horizon - Life On Mars 火星生命 - 10

But they never got there. The first disappeared into deep space. Another missed its target when its coordinates were confused. One NASA control center was working in metric, the other in feet and inch

发表于:2019-01-02 / 阅读(64) / 评论(0)

火星生命

US Spacecraft to Probe Origin of Gamma Rays

By David McAlary The U.S. space agency, NASA, launched a satellite Saturday that scientists hope will help them locate the sources of mysterious gamma ray explosions, the brightest most energetic burs

发表于:2019-01-03 / 阅读(66) / 评论(0)

VOA2004（下）--健康科技

CNN 2008-06-12

Hello, I am Melissa Long at the CNN Center here in Atlanta one o'clock in the afternoon Eastern time. And here's a look at what's happening NOW IN THE NEWS. Two hundred people are out of their homes in Cedar Rapids, Iowa after fears that flood water

发表于:2019-01-26 / 阅读(47) / 评论(0)

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中英双语新闻——149 Screen harmful UV rays

As summer approaches we all enjoy outdoor activities. But with sunlight becoming more intense we should protect our skin from harmful direct exposure to the sun. 随着夏日的到来，我们都喜欢进行一些户外运动。但因为日照愈加强

发表于:2019-02-14 / 阅读(59) / 评论(0)

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