PartⅡ Sample Dialogue
A：Good morning everyone.Today the training is focused on ATP system.Have you heard about ATP?Does anybody know about it?
B：I've heard it before and I think I know a little about it.
A：OK.Can you tell us about what you know?
B：ATP is a system，and stands for Automatic Train Protection.Its major function is to keep trains operating safely.That is all I know.
A：That is correct.Thank you，Peter.Except what Peter just told us，there is something more on ATP.ATP is a system which combines two systems together.They are ATS and ATO.We already had training on ATO before.ATS is a monitoring system and quite simple.
B：Excuse me.I also heard about ATC.Could you tell us what is the relationship between ATP and ATO，ATC，ATS?
A：ATO，ATS and ATP are subsystems to ATC.Each of them has its own function.All of them work together to ensure the train's safe operation.Please look at this picture.
对话
A：大家早上好。今天的培训重点是ATP系统。你们听说过ATP吗？有人知道吗？
B：我以前听过，我想我知道一点。
A：好的，你能告诉我们你知道哪些吗？
B：ATP是一个系统，代表列车自动保护。它的主要功能是保证列车安全运行。我就知道这些。
A：是的。谢谢你，彼得。除了彼得告诉我们的以外，ATP还有别的东西。ATP是一个将两个系统结合在一起的系统，它们是ATS和ATO。我们以前已经接受过ATO的培训。ATS是一个监控系统，非常简单。
B：打扰一下，我也听说过ATC。你能告诉我们ATP与ATO、ATC是什么关系吗？
A：ATO、ATS和ATP是ATC的子系统，每个子系统都有自己的功能，它们共同工作，保证列车的安全运行。请看这张图。