see inside.

來源: 北美愚醫 於 2021-06-27 21:50:40 [] [博客] [舊帖] [給我悄悄話] 閱讀數 : (581 bytes)
回答: 無症狀新冠感染者安全/危險嗎？ 由 北美愚醫 於 2021-06-27 18:36:11

 The 2 links are different. the first one is the youtube, but it turned out to be a PDF file?  I copied it and pasted it in a new web, and it is a youtube file, you can see it. 

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