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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// 记录答案：栈顶就是「当前元素右侧第一个更大值」（易错点3：别写反判断）

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我被80岁的外婆反向教学AI