是啊，也可以用紙，美國是造紙大國。事實上當時不少人在網上show 自己用布用紙做口罩

來源: 周老大於 2022-02-07 15:02:29 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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