as never before 的意思是“史无前例的”“前所未有的”“从来没有的”“空前的”。如：

Acclaimed as a “pearl in the desert”, the city is thriving as never before. 这个城市空前地繁荣兴旺起来，被誉为“沙漠中的明珠”。

As Xiangzi listened and watched, his heart ached as never before. 祥子听着，看着，心中感到一种向来没有过的难受。

Crime and lawlessness are rampant as never before in our history. 犯罪和违法行为之猖獗是我国历史上前所未有的。