?? ?????????????
????:1?????:???????
2?????
3?????v
4????????
5???????????
?????1?????4?????????? (? ????????????)?????????4???
1????4????????????,????????????????? ???????? ?? ???????????????????????????????????,??????,???,?????,??????????,??,???,?????????????,??“?”??,???????????,???????????????????????,????????????,??“????????????”????????“??????????”,??????,???
?????????????????,????????“????”??“???????????????”??,?????????,?,?????(?????)
??????????:???????