“AA制”用英语怎么说？

What would you recommend?

你们推荐什么？

What do you think I should order?

What is your suggestion?

What do you suggest to order?

I'll treat you tonight.

今天晚上我请客。

No, let's go Dutch.

别了，我们AA制吧。

go Dutch: AA制，也可以说 split the bill。