名词
中文翻译：臀部
同义词：
['buttocks', 'buttocks muscles']
例句：
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1.She sat down on the couch with her buttocks sticking out.
她坐在沙发上，臀部突出。
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2.The dancer's buttocks were squeezed tightly against the stage.
舞者的臀部紧贴着舞台。
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3.When she stood up, her buttocks felt sore from sitting too long.
当她站起来时，她的臀部因为久坐而感到疼痛。