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发表于:2018-12-05 / 阅读(58) / 评论(0)

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This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. As Valentines day approaches, remember, its the thought that counts. Just ask a decorated cricket. Because according to a study published in the January

发表于:2018-12-24 / 阅读(60) / 评论(0)

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学英语单词

8-Bromo-cAMP

air control shutter

algol type eclipsing binary

all-purpose sand

allum

alpha-phosphorescence band

amamon

Amorphophallus kiusianus

arteriomotor

ashipboard

aspredinids