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

2?????????

3????????200????

4????????????

5???????

7??1??,????7??????????????31???????,????????????300????????????????20?????????,??,????????????????????????,???????

??,????,??D6724???????????????????????,????????????????????????,????16???????,??????????????????10?????????????100????????????

??????????????,?????????????,?12306????12306????D6724?,????????????????????,?????

???,??D6724??????????????????????,???,???????????????????(?????????????? ? ?? ????????????? ??? ????????)

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