????12306??????1???????????21??????????,???2?4??,???

??12306????,??,????????????1??21???9???,?2.35????,??????20??2129.5??????????????

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

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

(?????? ???? ????????????????????? ?)

??:????

??

??:???????????,??????????,??????????????