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

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

3???????

4??????vx

5????????

2????????????12????????,?????

??????????????:?????????????,????????????????????????????????(11????)?????????????????,???????,???????,????????????????????????

?,??,?????????2??11??????????????????,?????????????????????????????????,?????????????,??????????,??????,??????????????“?????????????????????????????”?“??????????????”????????,??????????????????????

??????,????“??”???????????,????????????????“??”????,?????????????“????????”???,????????????????27?,????????????????????????????,???????????“????”??????????????????????“???”,?,???,???(? ???? ?????????????????????????????)

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