常量/NNBorderN常量NBorder|MAX_ZOOM_STEP_BLOCKADEDNBorder|MAX_ZOOM_STEP_BLOCKADEDloading_screen/common/defines/graphic/00_graphics.txt:494@province_zoomstep_max定义loading_screen/common/defines/graphic/00_graphics.txt:494-1