A: May I help you?

　　有什么可以帮忙的吗？

　　B: Yes, please. Could you tell me something about going through customs?

　　嗯，您能告诉我一些关于怎样通关的事吗？

　　A: Certainly. What would you like to know? Please go ahead.

　　当然可以。您想知道什么尽管问吧。

　　B: Thank you. What formalities do we passengers need to go through at the airport?

　　谢谢。乘客在机场通关需要哪些手续呢？

　　A: There are some, but not many. They won't take you a lot of time.

　　有一些，但不是很多，不会花费您太多的时间。

　　B: OK, that will be fine.

　　那很好。

　　A: Firstly you have to answer some questions from the officers.

　　首先，您要回答海关工作人员提出的一些问题。

　　B: Like what?

　　比如什么呢？

　　A: Your purpose of visiting, how long you will be staying, things like that.

　　假如您有什么需要申报或纳税的物品一定要提前申报并缴税。

　　B: Well, that's easy.

　　这很简单啊。

　　A: If you have brought something which has to be declared or something dutiable, you have to declare and pay duty on them first.

　　假如您有什么需要申报或缴税的物品一定要提前申报并纳税。

　　B: I get it. Thank you so much.

　　明白了。非常感谢。

　　A: You're quite welcome.

　　不必客气。

　　“go through”意为“通过，经历，经受”。例如：You have to go through difficulties and obstacles before gaining success. 要想成功不得不经受困难和阻碍。