智齒都是發育不全的牙,是最後麵的。我才發現,我隻有2 顆智齒,右上和左下,右上有8 顆牙,左下有8 顆牙。
智齒都是發育不全的牙,是最後麵的。我才發現,我隻有2 顆智齒,右上和左下,右上有8 顆牙,左下有8 顆牙。
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