当你练球的时候，每一次都应该做在一样的预备发球动作，就象每一次比赛之前所做的那样。
When you're practicing your serve, go through the same pre-serve rituals you use during a match.
新、旧发球技术在用力节奏上有本质性区别，新的发球动作节奏更符合动作目的和人体运动原理。
There exists intrinsic difference between the old and the new serves in that the new serve is true of the aim of actions and the laws of human movement.
研究发现，网球运动员的发球动作速度、正反手击球动作速度与专项速度素质之间有着密切的相关性，专项速度素质之间也有显著的相关性。
In order to improve the hitting speed of tennis athletes, the authors used the method of sports measure and statistics to analyze special speed quality of 28 young elite tennis athletes.
在艾伯塔省班夫郡举行的TELUS高尔夫巡回赛中，一只理查森地松鼠正在做在第二发球的动作。
A Richardson's ground squirrel takes in the action from the second tee during the Telus Skins Game golf tournament in Banff, Alberta.
一只理查森地松鼠正在做在第二发球的动作，图为艾伯塔省班夫郡telus高尔夫巡回赛。
A Richardson's ground squirrel takes in the action from second tee during the Telus Skins Game golf tournament in Banff, alberta.
像网球发球这样的快动作画面，再也不会忽动忽停了。
第三。排球正面上手发球技术与羽毛球高远球技术的动作间有运动技能的正迁移；
Third, The technical of the volleyball positive seat of honor serves and the technology of the badminton lofty ball movement has the movement skill the migration;
李佳薇的发球多使用反手位一个带“拱”的迷惑性动作的侧上、侧下旋发球，正手位可以用正胶发半下蹲发球。
Li Jia Wei of the use of multi-serve with a backhand bit, "arch" of the confusing nature of the action side, the side of the backspin serve, hand-made plastic can now serve a half squat.
李佳薇的发球多使用反手位一个带“拱”的迷惑性动作的侧上、侧下旋发球，正手位可以用正胶发半下蹲发球。
Li Jia Wei of the use of multi-serve with a backhand bit, "arch" of the confusing nature of the action side, the side of the backspin serve, hand-made plastic can now serve a half squat.
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