这次使命已被宣布为一次空前的成功。

The mission has been hailed as an unprecedented success.

《柯林斯英汉双解大词典》

这本书在近期出版史上是空前的成功。

The book has enjoyed a success unparalleled in recent publishing history.

《牛津词典》

法萨那的项目获得了空前的成功。

The success of Vathana's project is unprecedented.

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