对于需要改签或退票的乘客，他们可以在12306平台上或在车站售票处就能改签或退款。

For passengers who need to change or return their tickets, they can change the tickets or get their fund through 12306.cn or the ticket office at the station.

youdao

在纪录片中，一位流浪者从救济站获得一张免费车票，但却去售票处退票来换取现金。

As shown in the documentary, one of the homeless people received a free train ticket from the relief station but then got a refund for it at the ticket office.

youdao