?? ???????????12306??3.47??
????:1???????????:????vx
2?????VX????
3???????
4?????
5???????
???????????1??27? ??,1??27????????(?????????????),??1340?,??????1618????????????1?????26??,??1453.1????????????????,?????
????????????????1??27?????9??,??12306?????3.47??,????????,????????????????????????????????????????????????????????;????????????????????????????????????????????????????;????????????????????????????????????????????????????????
??,?,????????;?????????,?????,??,??,?????
?????,?????????????,??,?????????????,????????????,????????,??????????????????????????,??????????????????“????????????????”,???????????,??? ???:????