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

2?????

3??????????

4????????

5?????????

????,????“?????????”?“???????????????”???,??????12306??????,????????????????,12306???????????,?????????

???,????????????????,?????????????,“??”???,???????“????????”“??”???,????????????????,??“??”????“?????”?

?????????????????,??????????????,???,?????,????????????,???,?????

“??”???????12306???????????????“???”????12306????,???????????????????????????,????????????,????“??”??????????“??”,“????????????”?????,????????,???????

?????????,????????????,???????????????“??????????????????”????????,??????????????????,??????“??????”;????????“?????????”?????,?????,?????????;????????“????”??,??,????????????“??????”?……

???“????????????????????????”,???“???”????,???????“???”,?????“???12306,??????????”????,??????12306?????????????,??“??????????”“????,??????????????”,???????????

?????,???????????,??,???12306???????????????????????,?????????????,???????“????????”?????,????????????????????????

???? ?????:???????