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VOA慢速英语2017 世界上第一个核聚变反应堆已完成50%

World's First Nuclear Fusion Reactor 50 Percent Complete At the Geneva Superpower Summit in November 1985, American President Ronald Reagan met with the Soviet Union's General Secretary Mikhail Gorbachev. 在1985年11月的日内瓦超级大国首脑会

发表于:2019-01-03 / 阅读(47) / 评论(0)

2018年VOA慢速英语(一)月

英语听力：自然百科行星旅行指南：木星 Jupiter—1

Life feeling a bit ordinary? Travel choices a bit tame? Head beyond the asteroid belt for an out-of-this-world experience. Welcome to Jupiter, home of high-adrenaline adventure. Plunge into its mysterious depth. You drop through the clouds, it would

发表于:2019-01-08 / 阅读(38) / 评论(0)

自然百科2012年

英语听力：自然百科行星旅行指南：木星 Jupiter—6

When the space hardened Voyagers I and II flew past in 1979 on their way to the outer solar system, Jupiters great mysteries only deepened. How were these powerful magnetic storms generated inside a giant ball of gas? Why was one moon boiling with vo

发表于:2019-01-08 / 阅读(42) / 评论(0)

自然百科2012年

美国国家公共电台 NPR A New Course At Arkansas Colleges: How To Not Get Pregnant

A New Course At Arkansas Colleges: How To Not Get Pregnant KELLY MCEVERS, HOST: Most teen births in this country are actually to young adults - women who are 18 and 19-years-old. The highest rate is in Arkansas. It's a Bible Belt state that pushes ab

发表于:2019-01-17 / 阅读(53) / 评论(0)

2016年NPR美国国家公共电台8月

英语听力：自然百科行星旅行指南：木星 Jupiter—11

If gravity measurement showed no solid core, then Jupiter formed early like the Sun, with a core then its birth came later when solid materials were created. By measuring water content, Juno should also reveal how hot the solar system was, when Jupit

发表于:2019-01-22 / 阅读(35) / 评论(0)

自然百科2012年

英语听力：自然百科行星旅行指南：木星 Jupiter—16

the processes that hit Io or operating on Europa as well, but on a less dramatic scale. and so was this constant change(s) in Jupiter's gravitational pull that is distorting the surface and that's generating heat in the interior. This is a clue to Eu

发表于:2019-01-22 / 阅读(35) / 评论(0)

自然百科2012年

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bruise resistance tests

cam-bearing sleeve