????:????
2?????????????????
??????????“???”????????
?????????????5???7???
?????????????????10?????
?????????????????????
??????136??????????????
???GPS??2????:????????
2?????????????????
??????????“???”????????
4?7?13?????????
???22+9????????36??????
????????????139??24134?
?????????????????????
?????????????????????
«?????»???????????
?????????:???11?4?????
???:???????????
DirectFX:????????????????
?????????????????????
??:???????????????“??”
??????J?:?????????????
????:??????“???”??????
?????????????????????
2?????????????????
??:????3??????????????