now

发音： [naʊ ɔː(r) ˈnevə(r)]

意思为：勿失良机，机不可失;把握现在

例如：

I hope that the people of you will get behind us. It's now or never.

所以我希望你能支持我们，此时不搏更待何时。

I felt it was now or never and went right up to him.

我感到机不可失，所以径直走到他面前。

上面的例子now or never都是表示机不可失的意思。