名词
中文翻译：Unknown
同义词：
['buttocks', 'buttock', 'crotch', 'rump', 'sacrum', 'sitz']
例句：
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1. She sat on the couch with her buttocks sticking out.
她坐在沙发上，屁股凸出。
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2. The buttocks are covered in a thick layer of fur.
屁股上覆盖着厚厚的一层毛。
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3. He sat down on the chair with his buttocks facing the door.
他坐在椅子上，屁股对着门。