To create their open-source maps, OpenStreetMap volunteers travel through a region on foot, by bike, or by car with a handheld GPS transponder that logs their route.
To create their open-source maps, OpenStreetMap volunteers travel through a region on foot, by bike, or by car with a handheld GPS transponder that logs their route.
要建立它们自己的资源开放地图，志愿者们要用脚,自行车或汽车走遍一处地区。用一个手持式GPS发射仪记录他们的路径。