過去，老年人兜裏常揣一把炒豆子，時不時扔一粒進嘴，嚼得嘎嘣脆，就是在磨牙口。現代有口香糖，效果差不多。牙口，用進廢退

來源: fuz 於 2021-03-22 18:52:03 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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