He served 17 double faults.

他有17次双发失误。

柯林斯例句

He served too many double faults.

他出现了过多的两次发球失误.

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Is the hamstring injury the reason for those double faults, and defeat today?

你未愈的腿伤是你发出那些双误及失利的原因 吗 ?

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In the ninth game, with the score 4 - 4, he hit four double faults.

在第九局四比四的比分的情况下, 他双发四次失误.

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