He had not won decisive victory.

他赢得的胜利都不是决定性的。

That was a decisive victory.

那真是一场关键性的胜利。

It was a decisive victory.

这是场决定性的胜利。

The allies won a decisive victory.

盟国取得了决定性的胜利。

Well, I think we won a decisive victory.

好的，我认为我们赢得了一场决定性的胜利。