名词
中文翻译：膝盖
同义词：
['knee', 'kneecap', 'knee joint例句：1. She sat down on the couch with her knees bent.（她坐在沙发上，膝盖弯曲着。）']
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 advised him to exercise regularly to prevent injuries to his knees.
医生建议他定期锻炼以防止膝盖受伤。
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3. She put her hands on her knees and sighed deeply.
她把手放在膝盖上，深深地叹了口气。