名词
中文翻译：门牙
同义词：
['front tooth', 'upper front tooth', 'upper incisor']
例句：
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1. She hada chipped front tooth that needed fixing.
她有一颗门牙磕掉了，需要修复。
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2. The dentist advised her to visit the office regularly for check-ups.
牙医建议她定期来诊所做检查。
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3.He was surprised when he saw his front tooth was missing.
他看到自己的门牙不见了，感到很惊讶。