?? ??2+2??????????:????????????
????:1???????????:????????
2?????????
3???400?4?????
4????????????
5?????
??6???17?? (?????? ??????????? ??????????)??????6???????????????????17????????
?:?,???6????????13?,???????????,??2+2??????,???????????,?????????????????????,??????,?????????????????????,????????2+2?????????????????
?????????? ????????????????????????????????:??????,???????????????????6????18?????????2+2??
?2002???????2+2?,??????????????????????5??????2020?????,????????,???????????????????6????????18???????????
????????????????????2+2????????????????????????????????????????????????????????,??????????????????,???????,??????????????,??????????????????????(?????)
????:??????????