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