A: Excuse me. Which line goes downtown?

打扰一下，请问哪条线是去市区的。

B: You can take No. 38 or No. 45. Both of the buses will take you there.

你可以乘38路或者45路，这路公共汽车都会带你去那里。

A: Excuse me. Which set of subway tracks goes downtown?

打扰一下，请问哪条地铁线去市区?

B: The third line of subway tracks goes downtown.

第三号地铁线去市区。