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

2?????vx

3??????????

4??????????

5?????????

????11?????????????????4??? (???????? ???)3?,“??????????????”??????????????,????????????????????????????????????????????????????????????

“?????????”??3???? ???????????

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

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

????????????3?,?,????????????2?1????16???????

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

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

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