都没看送到面前的数据就下结论
回答: +1这个是正解。现在很多统计数据都没有总人数中打疫苗的比例。如果90%的总人口都打了疫苗,打了疫苗感染人数就有可能比10%不打疫
由 lilyofthevalley
于 2021-07-26 18:53:38
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