??
????????????????2??????????21? (??? ??????)???,?,?????????????????????????????????21???????????,??,???,????????????,????“?????????????????”??,????????????????????
??????????2?????????H??,??????“????”??????????????????“?????????”????????????????????,????????????????????,??????????????????????????????,??“???????????????????”????????????????????????????????????,????????????
??,????,?????????“?????”?,????????????????????????????????????????,??????1????????????????,??????????????360°??????????,??,????????????,????????????
?,“??????”????????,???????????,????????????????,????????(????????)
?????????
?????????????“????”???????????????????