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.

· · 来源：user资讯

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敏捷开发方法论在软件行业得到了广泛应用，其核心是快速迭代和持续反馈。

03版，这一点在雷电模拟器官方版本下载中也有详细论述

Юлия Сычева (корреспондент)

Mr Lemmens said that future spacecraft "should be designed in such a way that they can take themselves out of orbit safely, preferably by doing controlled re-entries".

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