in no time

We use this expression to say that something will happen very quickly.

我们用这个表达来说某事会很快发生。

A: I don't understand anything in our Italian lessons.

在咱们意大利语课上，我什么都没听懂，

B: Don't worry - you'll be speaking Italian in no time. You just need to get used to the accent.

别担心，你很快就能说意大利语了。你只是需要习惯它的腔调。