She promises to call me back later.

她承诺稍后给我回电话。

She promised to call me back later.

她承诺稍后回电话给我。

She said she would call back later.

她说她会晚点回电话。

He told me he would come back later.

他告诉我他之后会回来。

He has been away, you can come back later.

他已经走了，你可以稍后再来。

If you are busy now, can you call back later?

如果你不方便，现在可以稍后回电话吗？

The manager is in a meeting, please come back later.

管理人正在开会，请稍后再来。

Can you pay the bill first? I'll pay you back later.

你能不能先买单，我回头还你钱。

You can hang up first, and I'll call you back later.

你可以先挂电话，我稍后再打给你。

I'm busy at the moment - can you call back later?

我现在很忙，你能过会儿再打来吗？