名词
中文翻译：膝盖垫子
同义词：
['elbow cushion', 'knee pad']
例句：
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1.She sat on the couch with her knees up, enjoying the soft cushioning.
她坐在沙发上，膝盖朝上，享受着软垫的舒适。
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2. The old man had a knee cushion made for his chair to provide extra comfort.
这位老人为他椅子做了一个膝盖垫，以提供额外的舒适。
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3.The child was playing with his knee cushion, pretending to be a superhero.
孩子正在和他的膝盖垫玩耍，假装自己是超级英雄。