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2???????
3?????app
4???48??????
5?????q?
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????????12306??????,???????????????????????,????????,???????????,??????
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?????????????48????????????8?????????,??????5%?????;
?????24???????????????????48?????,??10%??;
??????????????24?????????,???????????20%?????
??????,???????8?????,??8?????,??????,????????8???????????,????5%????????????
???????????48?????,????5%????????????,????20%?????????
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