?? ???????????????????:?????????? ???
????:1??????vx:?????????????
2??????
3?????????
4???????
5????????????
??????????6???12??? ????????6??????12????,?????????
?,?????????????????????:??,?,??????????“???????????????”,??????????????????“??”???????????????????????“???????????????”,????????,???????????
???????,??????,?????????????“????????????????”,?????????“??”?????????“???????”??????????????????,??,??,????????????,??????,????,?????,?????????????????????,????????????????“????????????????????????????”???????“??”???????????,???????????????
????,??,????????????,????????????????,???????????,???? ????:?????????????