?? ???4????????“??”???21???
![](https://image.chezhanri.com/2019/0715/20190715141409714.jpg)
????:1?????????:???51??
2??????
3???????
4?????????????
5???????
?7???21??? (?? ???)????????????????????21??,???4?????????????“??????????????????”(?????????????????),????“?”????21?????,?????,21????????????????~23?;21???9???,?????????????
![](http://i2.chinanews.com.cn/simg/ypt/2024/240721/8818537e-aead-42d9-8eed-fbbd3ebf824d_zsite.jpg)
??,?21???5????4?“?”,9?????260??????,??8???(18??????/?)??????????????????,“???????”??????10~15???,????,?????21????????,???????(9~10???????,23~28???/???)?
????????,???“?”???,21?~23??,???9~11???????????????,???????????21??????~23?;??21?22????????6~7????8~9?????,22?23????????,??????????????????7~8?????????????????????
?????????????????????“????????”???,????????????????7?????21?9??,??7??????22?????????(??????????)
??????:????