double fault

US 
UK 
  • n.双发失误;双误(因两次发球失误输掉的一分)
  • Web发球双错误;双重错误;两次失误
Plural Form:double faults  
double fault
n.
1.
双发失误;双误(因两次发球失误输掉的一分)the loss of a point caused by a player not serving correctly twice

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