??:“???????????”????,???

????:??????????:2020??????

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

??????????,????“????,??”??????????????????????,?????????,??????????????,??????????????????,?????????,????????????????12306????????????????????,??????????????C919?“?????”????????????“???????????”??????????????,?????????????????“?????????,??????”????????????????????,?????????????????????????

??????????????????,??“?????????????????????????????????????????”???????????????????????????12306???????,?????,???????????????,?????????,????????????;???????????????50???????;???????????“?????”……??,??,????????????

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

??????????????????,????????????????????,??????????,?????,?????????????????????“???????????”????????,??,????????????!(????????????:???????;?????:???????????????)

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

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