????:2024-09-20 10:19:10 ??:????
????:?????????:????????
9???????19??,????????????“??”(Sigma Geography)?????????????????,“???”??????,??“?????????????”,???
“???”????????????????????,?????????????????“?????????”?????????????????????????????????????????????????????????????,?????????????????????“??????????”?,??????,?,??,???????????
“??”??????????????????“???????????”??,????????????????????(????????????? ????????????)
????????????:??????
????