????:1????????????:??????????

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

3???????

4?????vx

5??????

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

??????

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

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

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

????????

????“????”,???????,?????????“????????????”???,?????????????,??????????????????8????=???????8????,???2?????????,???

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

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

?????????????

??,???????

??????:«???»???????????

??:?????

????????? ??????

????????????:??????????

???? ???????

(?)

?????????:?????