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