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This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Some people are worried that the more we learn about genetics, the closer well get to a day when we can choose all sorts of characteristics for our bab

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学英语单词

acutipetala

adjustable interconnection block

afterwardness

alienage jurisdiction

amyloid-beta

antitamper

apatropine

Arteria laryngea inferior

ascending air

be big on sth

beta-lactamases