Y: Oh, the train's just about to leave. Let's get on.

　　Y:噢，火车就要开了，我们上车吧。

　　X: Are you sure it's the right train?

　　X:你确定那是我们要乘的列车吗?

　　Y: Let's ask. ...Excuse me. Is this the right train for Chicago?

　　Y:我们来问问看。……对不起，这是开往芝加哥的火车吗?

　　Z: Yes, it is. Hurry up. It'll leave at any moment.

　　Z:是的，没错。快点，马上就要开车了。