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

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

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

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

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

?,“?????????????????????”

????????,?????,?????????“?????????”?

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

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

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

??????:???

??

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