这是头一次
This is the first time
以上为机器翻译结果，长、整句建议使用 人工翻译 。
但这是头一次他们有机会解决这些问题。
But this is the first time it has a chance to actually solve them.
youdao
这是头一次的复活。
This is the first resurrection.
他们说这是头一次发现蒙古入侵船只如此大的一块外壳。
They said it was the first time such a large piece of hull had been recovered from the Mongol invasion fleets.
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