A：Dad, hurry! The train is coming. Aha, I am a superman.爸爸，快啊，地铁来了。啊哈，我是超人。

B：Don't rush,behave yourself please! Let the people get off first.不要跑，规矩点!先下后上。

A：Oh, we should. There are so many people. What if the train got full before we could get in?噢，要这样啊。这么多人，要是我们进去之前就挤满了人怎么办?

B：But, if we all pushed our way in, nobody could get off, and nobody could get in either.但是，如果我们都挤着进，就没人能下地铁，也没人能进去了。

A：How many stops are there to the Xidan station?到西单站还有几站?

B：There are four more stops.还有四站呢。

A：Oh, my God!噢，我的天呐。

B：What's wrong? You are like a little monkey, on pins and needles!怎么啦?你就像个小猴子，如坐针毡啊!

A：Because I need to use the restroom. Is there a restroom on the train?因为我要上厕所。地铁上有厕所吗?

B：No, not on the train, but in the station.地铁上没有，不过地铁站里有。

A：Why not? You told me that subway is a kind of train. If it had no restroom. what kind of train would that be?为什么没有啊?你告诉过我地铁是一种火车啊。如果没有厕所，那还叫火车吗?

B：Well, that is a question. You want to offer a suggestion?的确，是个问题。你想建议一下吗?

A：Oh, yeah, but not today. I am busy with praying the subway may get there as fast as possible.噢，我要建议一下，但不是今天。我忙着祈祷地铁尽快到站呢!

B：I guess you'll never forget today.我想你不会忘记今天的。