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A：Shall we go to the library by subway?
我们坐地铁去图书馆吗?
B：Yes, it's far quicker and less complicated.
是的，坐地铁去又快又省事。
A：OK. There is no subway in my city.
好的。我们城市没有地铁。
B：Really?
真的吗?
A：Yes. Does it operate night and day?
是的。地铁是否日夜运行?
B：Yes, and seven days a week.
是的，每周七天运行。
A：Where do we pay the fare?
我们在哪里买票?
B：Follow me, please.
请跟我来。
A：Do I have to pay an additional fare to change trains?
转车是否要另买票呢?
B：No, you don't have to.
不，不用另买票了。
A：OK, I see.
好的，我知道了。
