With the IAAF athletic competition rules being revised biennially, modern athletic competition became more and more benefit to athlete to achieve the best performance.
随着国际田联《田径竞赛规则》每两年修改一次，现代田径竞赛越来越有利于运动员创造优异的运动成绩；
With the IAAF athletic competition rules being revised biennially, modern athletic competition became more and more benefit to athlete to achieve the best performance.
随着国际田联《田径竞赛规则》每两年修改一次，现代田径竞赛越来越有利于运动员创造优异的运动成绩；
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