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枫下家园
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O记的到来让政府终于认识到高质量口罩的重要性了。看到坛子里有些朋友在质疑口罩的有效性,所以大致介绍一些本人所知道的关于口罩的基本信息
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xiaodonger
(xiaozhu);
2021-12-25
{3479}
(#14216012@0)
+3
谢谢科普!
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goodtea
(好茶);
2021-12-25
(#14216170@0)
不客气。知道的人越多么疫情就更有机会好转嘛。帮人其实也是帮己。
-
xiaodonger
(xiaozhu);
2021-12-25
(#14216241@0)
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