名词
中文翻译：Unknown
同义词：
['heel', 'sole', 'back of the foot']
例句：
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1. She kicked her ball into the net with her heel.
她用脚后跟将球踢进了网。
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2. He sat on the edge of the chair with his back against the wall.
他坐在椅子的边缘，背靠着墙。
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3. The dog ran around the yard with its heel dragging behind it.
狗在院子里跑，它的脚后跟拖着。