?? ??????????????????
????:1???????????:?????????
2???????
3???sn??
4?????VX
5???????
????????????????????6??????????14? (?? ????????????????????????)???????????????????????15???????????????????????,??,????????????
???????????,?????????????????????,???????????,??,???????,“?????????????????????????,?????????”?
???????????(?????)????,?????????,??,??????????????????????“??????????????”???????????????,???????????????????????,????????????
??,???????,??,???????????,??,???????????????,?????????
???????????????????,“?”?????????????,?????????????????,?????????????,????????,????????????“?????????,??????”?(???????) ??????:???????????