题目内容
写出IAAF 的全称：______
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竞走: ______ 马拉松：______ 跨栏：______
An axe kick, also known as a hammer kick or stretch kick, is characterized by a straightened leg with the heel ________ onto an opponent like the blade of an axe斧头.
In most styles, the _____ (脚背) is used to strike.
A Taekwondo practitioner typically wears a uniform， often ______ but sometimes black (or other colors), with a belt tied around the waist.
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