那个我已经负过了，我的牙医好友说她permanent retainer 去掉了，我也想去掉，

来源: 于 2011-12-08 10:26:43 [旧帖] [给我悄悄话] 本文已被阅读：次

She strongly recommends a nighttime retainer, so I don't have to feel the metals behind my teeth for the rest of my life.