????:1???????:???????

2????????

3?????sn??

4????????????

5????????

??????????6??????????????15????????(??? ???? ??)15?,???G520?????????,?????????????????????,?,?????????????,???

???????????????G520??????? ? ????

6????????15???????,???????????????????(?????“??”)??,??????,????????????????11???????,????????????????G520????????????????????,????,???,?????????????2??????45???????????

G520??????????,??,???????????????????,??????????G520?????????“520”“1314”????????,???????????“???,?????,??????????????????3???????????????47???????????????????????,??11:17????????????????????????????,??”???

???????,????????????????????????????????????????????????,???????????,???????????????????

“???????????”“??????”……“????????????”“??????????”……????????,?????????????,???????«???????»???????????«??????»??«???»??????????,????????????

“?‘????????’??!???????????????,??????????,????????”??????????????????????????????G520??????????????

????,???,??????????,?,???,??????,??????????????????,??????????,???????(????????)

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