?6.4??27??????????? ????

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

?????1????????21?? ???,21???????17?,?6.4???????????????????????????????????????,???27??????????,???????

????????????????????,??11???,????????55?,???????????????????5????????????

?????????????????,???????????????????,??????,??,?????,???,???????????????????????4???????????????10???????????????????

???????????,?10?????,?????22????????????????????????????????,????????????

????????,??,??????21????????????????,???????????????,??????????????????,????,??????????(?????????????????) ???:?????????????????