?? ?????????? ?????????????
![](https://image.chezhanri.com/2019/1226/166db1dd6de2bd401efb8e3e620a23c8.jpg)
????:1??????????:????????????
2?????
3?????vx
4??????
5?????
?????8?29?????????????????? ??,???????????28???,??????“??????????????????????”?
23?????,???,??8?????????????,??????????????????29????????????????7?????,???????????????????????????????29?,???????????????????????????????????????????????,????????????
??????????????????23??????????,????????????,??????26????;28???????????????,???????????????????????????????????23??????????????????????????????????,?,????????????????????????,?????
?????28???????????,???????????????????,??????,?????
????????27????????????,?????????,??????????????,???
??????????????????????,????????????????????,“????”????????????,????????,?????????????????????(???????) ???:??????