?? ???«????3»??“??”
????:1???????:?????
2?????v
3???????????
4?????????
5??????
12???????28????,???«???????????????????????3»???,???????????????????????,???????“???”,????????????,?????????????????“?????????”,????,“??,????????????,??”??????????,??????????,?,???????????????????????
??,«????3»?????????????????,??«?????????»?,????????????(?? ???????????????????)
??:?????