?? ??????????????????
????:1??????????:???????
2?????????
3????????238????
4???????sn
5???????150
?????????????1?4??????????????? (???????????? ??????)?4????????????????????,?????“?????????????”???,???,?????????-????????????????????????,???-???????-?????
1??????????????4?,“??????”??(???)????????????,??????????????????,?????????????????????????????????????????12??????????????45?????????,??????44?,?????????????????????????????????
?????,???????????????:“?2???2?????????,?????????????????,????????,??????,?,???”
1??????????????4????????????,“??????”???????(?)???,????????????????,??????-??-??-?????????????????????,?????????????,????,??????,????(???????????)
?????:???????????????????