??????2???????????????22???????????????? ?????????,??????????????????????????????21????,???????,????“?????????”?????????????????????????,??????,????“??????????”?

????,?????????????“????”,?????,???????????????

?:????????????????????

???????????????,????????????????????????????????,2???????20??????“??????”?

??,????????????????50%,??????????????????????????,???????????

??,“??????”

???,??????????????,???????????????“???”?

“?????? ?????????????????????,”????????????????????21?????“??????????????”

?????,?“???????????”?????????,??????????????????,????????????“????????”?

???????,?,?????????,???????????

?????????:????????????

??

??:???????????,??????????,??????????????