?? ??????????????????“??”
????:1?????????:???????98
2??????95??98
3???????????
4??????
5???????????24??
??9??????????19? (??? ??)????????9???19????????????????????????????????,???????????“???”(Sigma Geography),???
9???19?,?“????????????????”??????????????????? ????? ????,???,?????????????,?????“???????????”???“???”“?????????????????”“???”“??????????????”??,????????????????????????????????????????????????????????
?????????????????????,“?????”?,?????????????????????????????(???????????????)
??:??????????