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:你确定那是我们要搭的列车吗?

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。