Power comes from racquet head speed.

击球的力量来自拍头的速度。

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We found racquet head speed easy to generate making this racquet a joy when hitting topspin angles or when taking a rip at short balls.

极快的挥拍速度是我们在击打上旋角度球或突然摆短球时使用这款球拍的一个乐趣。

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Sharapova's racquet is back a little higher than I was taught to take mine — my backswing was more compact — but it helps her produce greater racquet-head speed, which means more power.

莎拉波娃的球拍收回的时候比我做的高了一点- - -我的回拍更加紧凑- - -但是她的回拍使拍头速度更快，也就意味着力量更大。

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Earlier in the week, the head of the World Bank said international support can speed progress -- "but only if coupled with real reform."

VOA: special.2011.05.27

This causes charged particles that initially came from the Sun to speed up and head out of our solar system.

FORBES: Voyager 1 Flies Through 'Magnetic Highway' On Its Way Out Of The Solar System

These gibbons are not scared of people and will brachiate at full speed over your awestruck head.

BBC: Drifting down the Sekonyer

The prime minister has asked the head of the Civil Service to speed up the inquiry into the working relationship between Doctor Fox and his friend, Adam Werritty, who has business interests in the defence industry.

BBC: 'Smear and innuendo' against Fox