????31????????????

??????????????????2???????14?????? (?? ????????)????14???,?8.5????????????,?????????????????????39.2%,?????????????1993??????????,???????,???????????,????????,?????

?????,????,????“?????????,??????‘??????’?????????????????????????????????????‘??’?,??50%,????,????????????”??

??????????????????????????????????????????????????,????????????????????????????????,??????????????????,?,???80???

????????12????????,???????????????,??????????

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