????:1???????:??400??

2???100??

3??????

4?????????

5???ly????

????????????????1??????????5?????????? ?????,????,???????????????,????????????????????????????????????????????????,??????1??,????????????????200?????

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?,?????????????,????,??6????????????9??,???????????????,??4~6???,?????????????????????????????????????8????????????????????,??????????????????4~6????;7??????????9????,???????????,????????????????????,???

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