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为什么实验结束后要洗手
更新时间: 2020-09-19 00:00:00  

因为有些东西混在一起会产生化学反应,还有会让一些微生物进入你的体内,危害人类的健康,有可能还会传染给别人,所以需要通过洗手来消灭细菌。

关键词: 为什么 实验 结束 洗手

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