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牙菌斑是一層薄膜，由細菌、殘餘的食物殘渣和唾液所組成。一天中牙菌斑就能在你的牙齒上迅速生長。那如果你這一輩子再也不刷牙呢？
請多多支持和訂閱〜！
加入頻道會員：加入會員
我們的Facebook也在這：What If Taiwan Facebook
我們的英文YouTube頻道：訂閱英文頻道
我們的Instagram：What If Instagram
#大膽科學 #whatif #scifi #刷牙 #牙菌斑
See show notes: https://inlet.fm/what-if-chinese/episodes/67e1c116f736fd86c91f480f
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