我個人認為自試兄的牙變好跟他大量攝入維生素C有關，我也大量攝入維生素C。維生素C也被用做防腐劑在食品工業。

來源: 羽衣甘藍於 2017-11-21 18:13:51 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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