名词
中文翻译：膝盖
同义词：
['knee', 'kneecap', 'patella']
例句：
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1.She sat on the couch with her knees drawn up to her chest.
她坐在沙发上，膝盖蜷缩到胸部。
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2.He knelt down and examined the wound with a small knife.
他跪了下来，用一把小刀检查伤口。
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3.The child's knee was bleeding heavily when he fell.
孩子摔倒时膝盖流血很多。