名词
中文翻译：膝盖
同义词：
['thigh', 'shin', 'kneecap']
例句：
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1. He sat on the couch with his knees pulled up to his chest.
他坐在沙发上，膝盖抵着胸口。
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2. She put her hands on her knees and sighed deeply.
她双手放在膝盖上，深深地叹了口气。
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3. The dancer's legs were crossed at the knee, showing off her long legs.
舞者交叉腿站立，展示了她的长腿。