essential characteristics of events
...项目本质特征；竞技能力；运动项目分类标准 [gap=966]Key words: competition and training；event group training theory；essential characteristics of events；competitive capacities；sports event classification standard ..
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essential characteristics of events
事件的基本特征
以上为机器翻译结果，长、整句建议使用 人工翻译 。