When you go by train, buy your ticket a long time before you travel.

乘火车去旅行，你需要提前很长时间买车票。

People get a ticket the first time the cameras are up, and then they don't get another ticket.

人们在第一次摄像头启动时就得到一张罚单，然后他们就不会再得到另一张罚单。

So, the agent says she can buy the tickets on the same day as long as she buys them at least one hour before the time that the bus leaves – the departure time.

因此，经纪人说，只要她在公共汽车出发时间（出发时间）前至少一小时购买车票， 她就可以在同一天购买车票。