???????2?21?? (???? ???????????????????)????,??,?????????????????????21??????,???????????????,??,??????,??“???????”?,??????????

??????“??”?,?????????????????????(????????????)

???2???????????H??????,????????????“?????????????????”??“?????????”??????????????,????????,??????,???????????“?????????????????”?????????????????????????????????,???????????????????????????

???,?????????????????,????“???????????????????”??????????,????????????????????????????????????????????????,?????????????????????1???????????,??360°?????????????????????????????????????,??????????????,?????????,??

????????,“????”????????????????,????????,??????,????????(????????????)

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

??

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