?? ??????????? ?????????????
![](https://image.chezhanri.com/2020/0316/927886ab56045574bd052b1a0d3beefa.jpg)
????:1?????:????????
2?????vx
3???????????
4?????98??????
5??????????
?????????????6????21???? (??)????????21?????
???,??????,????????????????????????????????????,????????
???????????,??5????,???????????,???????????,???,???????????????????,?????????????????????????????????????,??????????,?????????
????,?,???????????“??????????????”???????“??????”????????????,???????????,?????????????????????,?????????????????????????????
?????????????,????“?????????????????????????????????”?????????????????????????,????“???”???“??????????????????????????”?????????????????,????“????”,??????????????????????“?????”,?????
????????,?“??????????????”???“???”,??“?????????????????”??????,?????????????????????????;????????????,???;????,???????;????,????????????????????(??????) ??????:??????