the upper front teeth
上门牙
以上为机器翻译结果，长、整句建议使用 人工翻译 。
"The palettes," replied the dental professor, "are the front teeth, the two upper ones."
“瓷牌，”那位牙科医生回答说，“就是门牙，上排的两个门牙。”
youdao
Upper front teeth that are paper thin, with the enamel almost completely worn away, and teeth that hurt.
上端前齿过薄，牙釉质几乎消失，牙齿也有损伤。
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