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// 右侧第一个 <= cur 的元素, 所以用大于的就弹出
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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.
· 李娜 · 来源：tutorial资讯