關鍵是實驗的環境是多少病毒濃度。一般的地方，不是醫院的話，病毒濃度應該本來就很低

來源: Tove 於 2020-04-04 19:34:02 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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