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发球双误
1、faults───n.故障（fault的复数）；[地质]断层；错误；v.出差错；犯错误（fault的第三人称单数）
2、double room───双人间；大床房；n.双人房; 双人房间
3、find faults with───挑剔；批评；抱怨
4、double plus───双倍加号
5、double───v.加倍；对折；n. (Double)（美）杜布勒（人名）；adv.双重地；重叠的；n.极相似的对应物；替身；供双人用的事物；双倍；（复数）双打（尤指网球）；（在同一赛季或年份两次获胜的）双料冠军；（棒球）二垒安打； (C)双精度浮点数；pron.双倍数（或量）；det.是……的两倍；adj.两倍的；成对的；（花）重瓣的；供两人用的；双重的
6、double h───双倍h
7、double entry───复式簿记；复式计帐；复式记账[登记]; 双平巷
8、double digits───两位数
9、double-lock───v.用两把锁（或用双保险锁）把门锁上
1、He served too many double faults.───他出现了过多的两次发球失误。
2、She had five double faults, including back-to-back doubles in two games.───她有五双，包括断层，后端到早在双打两场比赛。
3、He served 17 double faults.───他有17次双发失误。
4、In the first set, she exploited Vaidisova's only double-faults to break her serve twice, and defended four break points of her own.───在第一局比赛中，她抓住了对手仅有的发球双误的机会两次破发，并且保住了自己的四个破发点。
5、He has served a number of double faults in this set.───他在这盘发球出现了一些双误。
6、She served double faults on crucial points and failed to put away easy volleys.───在关键的得分点上，她两次发球失误。在很容易应对的截击球上也出现了失误。
7、there are also the number of aces, the double faults, and the run distance.───还有的尖子人数，双发失误，和运行的距离。
8、I made a few double faults at the end of the second set but other than that I feel I played pretty well.───比赛结果证明我的选择是非常正确的，除了在第二盘快要结束的时候我有几次双发失误外，比赛一直比较顺利。
9、Ferrer won 11 points in the third set, when he committed 13 unforced errors and hit three double faults.───费雷尔在第三盘中拿下了十一分，并且有十三次非受迫失误和三次双误。
1、He served 17 double faults.
2、Even tennis champions sometimes serve double faults.
3、He has served a number of double faults in this set.