第一句改寫一下：新冠病毒是RNA病毒，但是相對穩定，變異不大，所以疫苗是最好抗疫成功的關鍵。

來源: Kwseeto 於 2020-04-04 01:32:06 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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