发球在网球运动中的重要性是谁都不能忽视的。好的发球,可以直接得分——一举完成“拿分”的任务;有的虽不能直接得分。但仍给对手造成很大威胁,为自己上网截击或底线进攻创造机会,这样的发球也能算为“成功的一半”。所以,运动员在比赛中往往很重视自己的发球局:保住发球局不失,就有了 The importance of serving a ball in tennis can not be ignored. Good serve, you can score directly - in one fell swoop to complete the “take points” of the task; although not directly score. But still pose a serious threat to the opponent, creating opportunities for their own interception or bottom-line attack, such a serve can be counted as “half of success.” Therefore, athletes tend to attach great importance to their game in the game: keep the serve without losing, there