A：Good! There’s the information desk. How do we get to the 70 th Street, please?
      您好！问讯处，请问我们怎样能到第70 街？

B：The Northern Line is what you want.
      你们可以坐北线地铁。

A：How much is it?
      票价多少？

B：It’s two yuan.
      两元。

A：Which way do we go for the Northern Line?
      我们怎样去北线地铁？

B：Just go through the No.8 ticket-barrier over there. A train will be in directly.
      从8 号检票口往前走，车马上就进站。

A：I appreciate it. Thank you.
      明白了。谢谢。

B：That’s all right.
      不客气。

1. 北的;(在)北部的;来自北部的
    Northern means in or from the north of a region, state, or country.

    e.g. Their two children were immigrants to Northern Ireland from Pennsylvania...
           他们的两个孩子是从宾夕法尼亚州移民到北爱尔兰的。
    e.g. Prices at three-star hotels fell furthest in several northern cities.
           3星级宾馆的住宿价格在几个北方城市降得最多。