?? ???:????“??”????
????:1???????????:??????????
2???sn??
3??????????????
4?95?98??????
5???????????
?????????2????????????????????????????4??????????????,?????????????????,?“?????????????”????????????,??????????????????“?”????????????????
1?????????????15??????????????????,????????????(??????????????????????)??????????????????????????????????????????????,????????????????
???“????”????????????????,????????????????????????????????????
?????????????2????,???????????????,?????????????????,??:??????,?,???
????,????“??”????????????????????,??“????”?,“??,????????,??,????,???,???????”?
??????????“???”?????????????????????,???????,????,?????????????????????????????????????????????????
????????(??????? ? ?????? ??)
???:??????