?? ??«??????2»??????
![](http://n.sinaimg.cn/news/transform/200/w600h400/20181119/Y2Cg-hnyuqhi0439364.png)
????:1???????:??????????
2??????
3???????????
4???????
5???????????????
???????2?16??????? ?«???????»(??????????«????????????2»)????????????,??????,???,??????????????????«????????????2»?????????:
??????????????,??;
????????????????,??,??;
???????????????????;
???????????????????????????????;
????????????????;
?????????????????,???;
?????,??????????????????????(?) ???:??????