一个左右手均能击球的棒球运动员，他的跑垒速度很快。
一项研究显示，网球运动员如果在击球时大声低吼，就能增加自己的胜算。
Tennis players who grunt loudly when they hit the ball appear to have a competitive edge over their opponents, a study finds.
由于网球运动员肌肉发达，所以击球力量很大。
The tennis player could hit the ball hard because his muscles were so strong.
网球运动员如果在击球时低吼，就能增加自己的胜算。
Tennis players who grunt loudly when they hit the ball appear to have a competitive edge over their opponents.
纵观这些有助于提高击球速度的因素，力量教练要用具备的科学研究信息去帮助棒球或垒球运动员增强其击球速度制定抗阻训练方案。
Moreover, the use of additional resistance worn on the forearm while swinging a baseball bat did not contribute to further increases in instantaneous bat swing velocity and batted-ball velocity.
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.
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.
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