方舟在解釋中國疫苗對Covid-19無效很好，用病毒受體ACE2肯定了美國疫苗的作用。

来源: 天地間22 于 2023-08-02 15:06:06 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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