草琥珀酸去羟酶

SSS 2008-06-23

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? On June 4th we told you about iron snowflakes on Mercury. Today we have some radical news about the atmosphere of Venus. Literally, a radical is a molecule that reacts e

发表于:2018-12-24 / 阅读(48) / 评论(0)

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英语大赢家上册 083.Topic 3事故 Accidents

经典背诵 Recitation Benjamin: There are more and more cars in Beijing. The parking space is too small to hold so many cars. And my parking space is getting smaller. Sometimes my car gets scratched when I park it. That's really a big problem. We h

发表于:2018-12-31 / 阅读(40) / 评论(0)

英语大赢家上册

专业术语—SARS专业词汇（二）

Erythromycin,红霉素 Azithromycin,阿奇霉素 Clarithromycin,克拉霉素 Fluoroquinolones and their derivatives （e.g. levofloxacin）,多西环素（如：脱氧土霉素） Tetracyclines （e.g

发表于:2019-01-03 / 阅读(41) / 评论(0)

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麻省理工学院公开课：单变量微积分03：求导四则运算及三角函数导数

分集介绍：导数，商数，正弦和余弦 Derivatives.of.products.quotients.sine.cosine

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麻省理工学院公开课：单变量微积分

英文原版对话1000个:865 Accidental Feelings

Fred: So, after this horrible accident, how did life your change? What are... What could you say are your after thoughts of after surviving such an experience? Shibika: Right. Like, to be completely honest, in the beginning I was really upset and I w

发表于:2019-01-06 / 阅读(43) / 评论(0)

原版英语对话1000个

The Ass，the Ox and the Birds

An ass and an ox，fastened to the same yoke，were draging a waggon．While the ox was pulling with all his might he he broke a horn．The ass swore that he had got no help whatever from his weak companion．Exerting himself in the labour，the ox b

发表于:2019-01-09 / 阅读(111) / 评论(0)

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alipogene tiparvovec

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base band distribution

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