?????????????,???,????????2?????????????????????,???

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

????????,???,??“????”??????,????,???

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

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

“????”_????

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

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

2??????????

3????????????

4??????????

5???sn???????

?????????????,???,????????2?????????????????????,???

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

????????,???,??“????”??????,????,???

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

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