????“????????”??????

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

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

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

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