We cam rollers replacement, double fault also eliminates.

我们差凸轮滚子调换后, 轻影障碍也随之打消了.

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At match point, she served a double fault.

她在决胜点两次发球失误.

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Double fault: A second failed serve in a row, resulting in the loss of the point.

双发失误: 连续两次发球失误, 造成失分.

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