名词
中文翻译：Unknown
同义词：
['buttocks', 'buttock', 'glutes', 'hips']
例句：
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1. She sat on the couch with her buttocks sticking out.
她坐在沙发上，屁股翘得老高。
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2. The buttocks are a great source of strength and endurance.
臀部是力量和耐力的好来源。
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3.He lifted his buttocks to get up from the chair.
他用力抬起臀部从椅子上站起来。