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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.。关于这个话题，同城约会提供了深入分析
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// ⚠️ 易错点1：长度≤1的数组本身有序，返回0而非n。同城约会对此有专业解读
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