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发表于:2018-11-29 / 阅读(217) / 评论(0)

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发表于:2018-12-03 / 阅读(113) / 评论(0)

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This is Scientific American Sixty Seconds Science, I'm Sophie Bushwick, got a minute? When Mexican tetra fish moved into darker caves long ago, they evolved to deal with the dark by becoming albino and going blind. A new research shows that the chang

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SCOTT SIMON, HOST: One of the hottest gifts of the season is a little too hot, hot enough to catch fire. Hoverboards have been burning up because of problems with their lithium-ion batteries. And lithium-ion batteries are in a lot of things these day

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American inventor John Goodenough first started working on battery technology more than 40 years ago. Goodenough actually co-invented lithium-ion batteries in 1980. This eventually led to a revolution in the electronics industry because those devices

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T Tanshinone IIA 丹参酮IIA Tanshinone I 丹参酮I Tanshinone IIB 丹参酮IIB Taraxasterol 蒲公英甾醇 Taraxerol 蒲公英赛醇 Tauro ursodesoxy cholic acid 牛磺熊去氧胆酸 Taxifolin 花旗

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发表于:2019-01-03 / 阅读(154) / 评论(0)

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发表于:2019-02-04 / 阅读(179) / 评论(0)

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发表于:2019-02-05 / 阅读(202) / 评论(0)

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发表于:2019-02-08 / 阅读(140) / 评论(0)

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发表于:2019-02-13 / 阅读(171) / 评论(0)

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Voice 1 Hello. Im Rachel Hobson. Voice 2 And Im Mike Procter. Welcome to Spotlight. This programme uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. Voice 3 I was in the tent

发表于:2019-02-14 / 阅读(128) / 评论(0)

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学英语单词

a good rule of thumb

Adonis brevistyla

almost contact manifold

amplifier gain characteristic