That is the third ace that he has served this match.
那是他在这场
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.
通过教学实验,把超等长训练法应
于网球的接发球教学,运数理统计法对实验数据进行分析。
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