名词
中文翻译：下巴
同义词：
['下颚，下颌例句：1. She had a top jaw and a beautiful smile.（她有一张漂亮的下巴和灿烂的笑容。）']
例句：
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1. She had a top jaw and a beautiful smile.
她有一张漂亮的下巴和灿烂的笑容。
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2.The dentist removed her top jaw to fix the bite.
牙医拔除了她的上颚来矫正咬合。
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3. In the movie, the main character has a top jaw injury.
电影中，主角的上颚受了伤。