?? ?????????????????
????:1????????:????????
2?????
3?????????
4?????vx
5????????????
???8?6?????????? ???????????6??????,??????????????????,???????????????????????????????
????????????????????,??????????????????????????????,???????
????????????????,??????????????8????1??????“???”?????????,???????????“?”?
??????8??????1????????????????????????,“??,??????”,?????????????????????????????????,?????????,??(??????????????????????) ????:???