??????“?????”,????

????:???????:??sn??

6?????,?????,?????????????,?????“?????????”,?????

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

???????6?29?9??,??????20?????????????????????,7??8?????????????????,?????????,???,?????????,???????,???????,????,???????????????????????

??,??????,????????????????????,??????????,?????????????,?????????????????????,???????????4000????3.7?????????,???????????????????????????????????????????????,???????,?????????????????,???????,????????????,??????????“????????????????”,?????????“???????”,???“?”?

??????????????

????????????

????????????????

(??????) ??:????