名词
中文翻译：Unknown
同义词：
['buttocks', 'buttock', 'buttock fat']
例句：
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1. She lifted her butt up to give him a better view.
她把臀部抬起来给他更好的视角。
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2. He was so proud of his buttock muscles.
他为自己的臀部肌肉感到自豪。
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3. The buttock area is often prone to cellulite.
臀部区域常常容易出现橘皮纹。