老驴,我还没有找到那首诗歌。找到了再贴。
回答: 这个数据未必一定能推出反向隔离。显然传染病感染率是和参与集体活动的程度相关的。有没有隔离,都是小孩年轻人更活跃。。。
由 FarewellDonkey18
于 2022-04-26 21:26:02
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