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2???????100?

3???????

4?????????

5?????????

2?7????,????????????????????????A???,???

?????????????????????????????????????????????,??2??????????40?241?8?????A???????????

???????????????,?????????1500??????????????,??2????????????16???538????????????????????????“???,???????????,????,??????”???,???

?,????????????????????????????,????????500???1000?????

???,??????500????;??????????????????1000???;???????1500???

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