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
。
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
。
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

实验,把超等长训练法应
于网球的接发球
,运
数理统计法对实验数据进行
析。
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