[异想]计时牙刷

鉴于刷牙需要刷三分钟,建议在牙刷上面装一个定时器和报警器…

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3 Responses to [异想]计时牙刷

  1. 999 says:

    这个我在大学寝室时就有人提到了,哈哈。。。

  2. Eliza says:

    现在市面上还有三分钟沙漏可以买到

  3. Qian Bo Rong says:

    市面上就有售带计时功能的电动牙刷!如果想买,我可以提供型号,哈哈。。。

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