?? ????(?)?????????????12?????28??
????:1???????????:????
2?????
3????????
4??????
5???????
??12?????????????28??????? ???,12?28?????????????????,«??»??
??:???,???????????????????,??????????????????????????,???????????????????????30?????????????,????180?90????????,???????????30?,??????????????????????????180??90?,?????????????????????????????????????????????,??????????,????????????????????????,??????????????
?2022?????????????????????????????????«???????????????????????????????»,??30???????
????:??