double-fault

基本解释

This paper presents a STD bus double modular fault-tolerant computer system based on computer architecture.
从计算机体系结构观点，提出一个STD总线工控机二模容错计算机系统。
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Her second serve hit the white tape atop the net and bounced back for Sharapova's 10th double-fault of an error-filled afternoon, closing Li's 6-4, 7-5 victory Thursday.
莎拉波娃的第二次发球击中了网绳顶端的白布并弹回来，成为莎拉波娃在下午这场失误众多的比赛中发出的第十个双发失误并结束了这场比赛，李娜以6比4、7比5的成绩赢得了胜利。
The 24-year-old seemed to have turned things around with an early break in the second set but her serving demons were never far away and a seventh double-fault helped Li to level at 4-4.
第二盘中，莎娃早早取得破发，似乎要扭转局势，但是她的发球还是不稳定，在今天第7次双误后，比分变成4-4平。

Kerber saved two set points but then produced a double-fault to give it away.
NPR: Sharapova Beats Kerber To Reach Stuttgart Final
Two games later she endured one final double-fault, then hit winners on the last two points.
NPR: Sharapova Beats Errani In Key Biscayne Quarters
Venus Williams took advantage of Cornet's double-fault to end the first set.
NPR: Djokovic, Sharapova Cruise At Aussie Open

In tennis, if a player serves a double fault, they make a mistake with both serves and lose the point.