首先，业精于勤，无论是发球，还是接发——任何一分，都来之不易，哪怕你的位置极具进攻性。

First, it makes players work hard, both on their serve and return games-points aren't that easy to finish, even from an attacking position.

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发球是比赛的开始，也是一项先发制人的进攻性技术。

Serving is the beginning of a match, also is an item of offensive technology with getting the drop on opponents.

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当被问到更具进攻性是否意味着更多的发球上网时，罗迪克显得模棱两可，但是承认他在这方面开了小灶。

When asked whether a more aggressive approach meant more emphasis on serve-volleying, Roddick was equivocal, but admitted that he had been tinkering with that part of his game.

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