A new study shows that exposure to two specific 'forever chemicals' may accelerate biological aging, especially in middle-aged men. Researchers revealed a link between faster epigenetic aging, and two of these alternatives, PFNA and PFOSA, a precursor of PFOA.

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从9月开学，到11月这2个月，一直在帮助她适应集体生活，也坚持送往幼儿园，没有缺席过一次。

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当年那个只会讲冷笑话的语音助手，终于进一步靠近能够理解复杂语境的赛博管家，再换个比喻，也可以说这也是海外首款「豆包手机」。

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