除了确认挑战有效与否，鹰眼还提供各种统计数据，如发球方向和落球点、击球比较和球员移动路径。
Besides deciding challenges, Hawk-Eye also offers various statistics, like serve direction and placement, shot comparisons and player movement tracking information.
当然，这里也有一些可以在发球上同桑普拉斯一较高下的人，左撇子如伊万尼塞维奇和唐讷都可以将球打在场上任何一个角落，但他们却不能有效的控制这种能力；
Certainly there have been other serves rivaling Sampras. Though they couldn't back it up as effectively, southpaws like Goran Ivanisevic and Roscoe Tanner could strike every corner.
米尔尼的强力发球和网前截击显得并不十分有效。
我后撤一步再拿球，这样我就有了一两秒的时间观察对方发球的落点，实践证明这很有效。
So I took a step back to get a look at a couple more second serves, and that worked out for me.
结果显示：中国男排在发球的有效率上与巴、意两队存在显著性差异，发球速度的各项指标均低于巴、意两队。提出了建立新的“一攻”观念、制定特殊政策鼓励大力跳发球等观点。
The results show that the serve efficient of Chinese team has marked difference from Brazilian and Italian, each term of serve speed of China team is lower than any others.
结果显示：中国男排在发球的有效率上与巴、意两队存在显著性差异，发球速度的各项指标均低于巴、意两队。提出了建立新的“一攻”观念、制定特殊政策鼓励大力跳发球等观点。
The results show that the serve efficient of Chinese team has marked difference from Brazilian and Italian, each term of serve speed of China team is lower than any others.
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