第一句：Excuse me. Where is the railway station?

打扰一下，请问火车站在哪儿?

A: Excuse me. Where is the railway station?

打扰一下，请问火车站在哪儿?

B: I'm new here. You'd better ask the local people.

我刚到这儿，你最好问问当地人。

第二句：Could you show me the way to the railway station, please?

请问你能告诉我去火车站的路吗?

A: Excuse me. Could you show the way to the railway station, please?

打扰了，请问你能告诉我去火车站的路吗?

B: I'm sorry I'm not sure.

对不起，我不太清楚。

询问地点的相关表达法已经介绍了许多，最简单直接的就是：Where is... 这样的句型，但是当向陌生人问路时，最好礼貌委婉一点，可以用：

I'm sorry to trouble you. Could you tell me where the railway station is?

很抱歉打扰您， 您能告诉我去火车站怎么走吗?