碘十一炔苯酯

听电影学英语-生活大爆炸第一季 15．The Pork Chop Indeterminacy(少女测不准)

[00:01.76]on the other hand,some physicists are concerned that 另一方面有的物理学家担忧 [00:05.12]if this supercollider actually works, 一旦超级粒子加速器研制成功 [00:06.68]it'll create a black hole and swallow up the earth,

发表于:2018-12-07 / 阅读(90) / 评论(0)

听电影学英语-生活大爆炸

Dou,Re,Mi

Dou,Re,Mi Let's start at the very beginning A very good place to start When you read you begin with A B C When you sing you begin with Ro-re-mi Do-re-mi Do-re-mi The first three notes just happen to b

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SSS 2011-03-29

This is Scientific Americans 60-Second Science. Im Steve Mirsky. Got a minute? To keep your car purring, you have to change the oil. Such maintenance produces eight billion gallons of used motor oil annually. Some waste oil does get re-refined to pro

发表于:2018-12-24 / 阅读(72) / 评论(0)

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This is Scientific American's 60-Second Science. I am Steve Mirsky.Got a minute? Talk about your vicious cycles. A new study finds that belly fat could be making you hungrier. Which would lead to more belly fat. The research was performed at the Univ

发表于:2019-01-08 / 阅读(73) / 评论(0)

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Dou,Re,M

Let's start at the very beginning A very good place to start When you read you begin with A B C When you sing you begin with Ro-re-mi Do-re-mi Do-re-mi The first three notes just happen to be Do-re-mi

发表于:2019-01-10 / 阅读(85) / 评论(0)

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2006年VOA标准英语-Diplomacy Efforts in Middle East Take on Greate

By Jim Bertel Washington, D.C. 31 July 2006 watch Diplomacy report U.S. Secretary of State Condoleezza Rice is on her way home to Washington today Monday optimistic that a comprehensive settlement to the Middle East crisis can be reached in the comi

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