名词
中文翻译：牙齿
同义词：
['dental', 'jaw', 'gum']
例句：
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1. She has a beautiful smile with perfect teeth.
她拥有一张完美无瑕的笑脸。
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2. He had to have his tooth fixed because it was hurting him.
他不得不去拔牙，因为他的牙疼。
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3. The dentist advised her to brush her teeth twice a day.
牙医建议她每天刷牙两次。