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苯甲腈

This is Scientific Americans 60-Second Science. Im Sophie Bushwick. Got a Minute? What's the best way to find out if an unknown mixture contains a specific substance, like an environmental contaminant? You could use an expensive, bulky gas chromatogr

发表于:2019-01-08 / 阅读(173) / 评论(0) 分类 Scientific American(八)月

The planet also began releasing oxygen, thanks to an ancient adoption of photosynthesis. A very ancestral primitive plant cell either engulfed or tried to digest or surrounded a cyanobaterium and instead of digesting it, it actually became an organ w

发表于:2019-01-23 / 阅读(143) / 评论(0) 分类 探索与发现2014年

 Superglue 强力胶 Male: Help!Help! Female:What's wrong? M: I was fixing my coffee cup with superglue .And I must have got some on my fingers but I scratch my forhead.And now my hand is stuck to my head. F: Superglue ? Cool! What makes supergl

发表于:2019-01-26 / 阅读(119) / 评论(0) 分类 英语听力文摘 English Digest

Indoor air pollution is a common threat to human health, the new study looked at five common house plants and found that when it comes to removing harmful chemicals from the air, those five plants are better than others. 室内空气污染对人类健康

发表于:2019-02-07 / 阅读(171) / 评论(0) 分类 阅读空间

本期内容: A humble houseplant with a dash of rabbit DNA could help lower our exposure to indoor air pollution, new research suggests. Scientists have revealed that by inserting a rabbit gene into devils ivy the plant is able to clean the surrou

发表于:2019-02-20 / 阅读(143) / 评论(0) 分类 夏说英语新闻晨读
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accusator
air-conditioner
alio
angle of delivity
anisonogamists
antennal nerve
Athis-de-l'Orne
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chiricas
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color distribution
commercial irregularities
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cost leadership
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defamable
Dioscorea elephantipes
dwight eisenhowers
dynamical boundary value problem
echinococcosis of breast
etheryl ethylene
exocoeloma
f.a.c.
fibrillar crystals
Fichtelberg
field emission microscopy
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flax breaking roller
Gastrochilus sinensis
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genus Perisoreus
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