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

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

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

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

?????????,??,?????????,??????????????!(??????????:???? ???????????? ???? ???????????????)

?????:????

??“?????v”

?? ????|??????“??” ????

????:1??????v:??????sn

2???????????

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

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

5??????150???

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

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

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

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

?????????,??,?????????,??????????????!(??????????:???? ???????????? ???? ???????????????)

?????:????