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为什么我每天都有刷牙，还是蛀牙了呢？
猫小帅蛀牙去看牙医，医生说是因为牙齿没刷干净才导致蛀牙的，那么要怎样刷牙才算是刷干净了呢？一起来看看这个刷牙科普视频《我有刷牙，怎么还蛀牙了》吧~更多儿童科普故事，欢迎关注猫小帅
猫小帅十万个为什么41/100
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