PartⅡ Sample Dialogue
A：Hello，Peter.Nice to see you again.
B：Hi，Lin.Glad to see you too.
A：Thanks a lot for helping me to know metro equipment last time.
B：It's not a big deal.So do you know all equipment and facilities in a metro?
A：Yes，but I need help on metro signs.
B：Well，I am on a break，so I can take you for a walk.Let's take a look at all the signs in this metro station，and find out the meanings of them.It is much easier than knowing all equipment，because some signs are also used in other public areas like railway station，supermarket and library.
A：OK.Let's go.I do not want to take too much of your break time.
对话
A：你好，彼得。很高兴再次见到你。
B：你好，林。我也很高兴见到你。
A：非常感谢你上次帮我了解了地铁设备。
B：没什么。你知道地铁里的所有设备和设施了吗？
A：是的，但我还想了解下地铁标志。
B：好的，我正好休息，所以我可以带你去看看。我们看看这座地铁站的所有标志，找出它们的含义。这比了解所有的设备容易得多，因为有些标志也在其他公共
区域使用，如火车站、超市和图书馆。
A：好，我们走吧。别占用你太多的时间。