Shop Assistant:
Can I help you?

我能帮你吗?
Peter:
Customer: Yes, I’m looking for a pair of trousers.

我想买一条裤子。
Shop Assistant:
Shop Assistant: What size are you?

你穿多大号?
Peter:
Customer: I’m a large.

我穿大号。
Shop Assistant:
Shop Assistant: Ok, try these on in the changing rooms.

那你去试衣间试试这条裤子吧。
Peter:
Customer: Thanks.

谢谢。