????:1???????:???????

2????????????

3????????

4??????????

5???????app???

?????????6??23?? (????????? ???)????????22?????????????,????????,????????,????,??????????????????

???????????,??????????????????????????????,????????????????????????????????????,?,????????????????,????12306APP?12306???????

????????????,?????????????????????????????,??12306??,????30????????????????????????????(????????????),???12306??????????(12306????????APP)?????,??????????????????

???????????????180????????????(??),????????,???(????????????????) ????:??????