还用得着推理,牙开始疼了就说明牙有问题,刷牙不可能治愈牙痛,刷牙只能预防牙痛
就像流感疫苗,对流感患者没意义
还用得着推理,牙开始疼了就说明牙有问题,刷牙不可能治愈牙痛,刷牙只能预防牙痛
就像流感疫苗,对流感患者没意义
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