B：I'm sorry. What's this for? 对不起，这是什么费用？

同类问句：

Here's your bill, sir. Could you please check it? 这是您的账单，请您核对一下好吗？

May I check it? 我可以核对一下吗？

提前结账噢，你可以先结账，把行李放到我们的行李寄存处。

A: I see. I am going to the Palace Museum for a visit today. I'm afraid I won't be back before 12. 明白了。 我今天要到故宫博物院参观，12点以前恐怕回不来。

B: Oh, you can check out and leave your baggage with us in the check room. It's free of charge. 噢，你可以先结账，把行李放到我们的行李寄存处，这属于免费服务。

同类问句：

That will be wonderful. Thank you so much. 好极了，谢谢。

My pleasure.不用谢。

I have a lot of baggages. Would you send a bellman at a quarter to two?

我有好多行李，你能在13点45分的时候派一个男服务员来吗？

No problem.没问题。