喵博士说科学|有趣的科学小知识|生活小常识
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口水1——新鲜的口水是干净的液体
3 minutes
Posted May 6, 2022 at 9:33 am.
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蟑螂3——就算地球毁灭，他们也会继续生存
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口水2——口水是保护我们健康的门神
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