研究表明，新规则提高了对田径运动技术的难度要求。
Research indicated that the modified rules presented higher demand in Athletic skills.
随着世界田径运动技术水平的不断提高，必然要形成它固有的态势。
With the improvement of the world track and field sports technique, it is bound to form its fixed situation.
田径运动需要高水平的专项技术和技巧。
Athletics requires highly specialized techniques and skills.
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