名词
中文翻译：膝盖
同义词：
['knee', 'kneecap', 'patella']
例句：
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1. He sat on the couch with his knees drawn up to his chest.
他坐在沙发上，把膝盖缩到胸前。
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2. She knelt down and examined the wound carefully.
她跪下来仔细检查伤口。
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3. The doctor advised him to rest his knee for a week.
医生建议他休息膝盖一周。