????:2024-09-20 13:20:49 ??:????
????:??????????:???????
9???19????,?????????????????????“??”(Sigma Geography)????????????,“??????????????????????????”????????????,??“?????????????”,?????????????
“??”??????????????,??“???”????????????????????????????,???????????????????“??”??,??????,??????????????,????????????,??????????????????
“???????”?????????????????????????????????“?”??????????,????????????(?????? ?????????????????????)
?:????
????