“the improvement of young and middle-aged people's physical fitness by sports”的概念、定义、翻译、参考文献-科学参考

单词	the improvement of young and middle-aged people's physical fitness by sports
释义	the improvement of young and middle-aged people's physical fitness by sports Encyclopedia 教育学运动生理学释 the improvement of young and middle-aged people's physical fitness by sports运动对中青年体能的改善
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