名词
中文翻译：Unknown
同义词：
['knee', 'kneecap', 'knee joint']
例句：
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1. She sat down on the couch with her knees bent.
她坐在沙发上，膝盖弯曲着。
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2. The doctor examined his knee and found it to be in good condition.
医生检查了他的膝盖，发现它状况良好。
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3. He put his weight on his knee as he walked across the room.
他走路时把重量放在他的膝盖上。