Leave it to me.

We use this expression to tell someone that we are happy to take responsibility for doing something.

我们用这个短语来告诉某人我们很乐意负责某事。

A: How can we get hold of a video recorder before the meeting tomorrow?

我们怎样才能在明天开会前弄到一台录像机呢?

B: Leave it to me. I know someone who can help.

交给我吧。我知道有人能帮忙。