名词
中文翻译：脚跟
同义词：
['heel', 'sole', 'heel of the foot']
例句：
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1. The dancer's feet are firmly planted on the floor.
舞者的脚牢牢地踩在地板上。
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2. The old man had to walk with a cane because of his injured foot.
老人因为受伤的脚不得不用拐杖走路。
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3. She placed her foot on the ground and started to run.
她把脚放在地上开始跑步。