欧亚大陆历史长，人口多且密集，是病毒传播与变异的理想地方，所以欧亚大陆的病毒种类及爆发次数非常多

来源: akuan 于 2023-12-21 07:23:35 [旧帖] [给我悄悄话] 本文已被阅读：次

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