Abjective: To investigate the relationship between tooth mobility and toothwear through a descriptive survey.
目的:研究牙周病患者患牙的磨
与松动的关系。
Abjective: To investigate the relationship between tooth mobility and toothwear through a descriptive survey.
目的:研究牙周病患者患牙的磨与松动的关系。
声
：以上例句、词性分类
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