That is the third ace that he has served this match.
那是他在这场比赛中的第3次发球得分。
That is the third ace that he has served this match.
那是他在这场比赛中的第3次发球得分。
In order to develop the explosive strength of athlete on receiving ball,this essay applied the plyometrics training method in tennis return of service teaching through educational experiment.
通过教
实验,把超等长训练法应
于网球的接发球教,
统计法对实验据进行分析。
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