求翻译：在车票载明的列车开车前2小时前，尚未换取纸质车票的，可以在本网站办理退票手续；列车开车前2小时内或者已经换取纸质车票的，只能在车站退票窗口办理。铁路客票代售点不能办理退票手续。是什么意思？

Set out in the train ticket before driving 2 hours ago, not in exchange for paper tickets, you can obtain a refund on this site; train car within 2 hours before or have been in exchange for paper tickets and can only refund the window at the station for. Rail ticket outlets can not obtain a refund.

正在翻译，请等待...

Stipulated in the ticket the train drives before previous 2 hours, not yet receives in exchange for the paper ticket, may handle in this website returns a ticket the procedure; The train drove in previous 2 hours or already receives in exchange for the paper ticket, only could return a ticket the wi

In front of the train car contained ticket 2 hours before, not in exchange for paper tickets, you can arrange refund on this site; train or have been within 2 hours before train departure for paper tickets only at the station ticket window handle. Train ticket point cannot arrange refund.