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对,保护珐琅质很重要. 我知道是不要用硬毛牙刷, 刷牙要GENTLE. 牙齿好坏有遗传因素. 至于黑人兄弟, 你觉得是绝对的白还是相对的白(皮肤衬托的?)呵呵

dropoutinmiami (东北的饺子)
(#168642@0)
2001-8-16 -04:00
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