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

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

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

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

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

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