1815年之前，那些没有生活在通航的水路旁的西部农民只能从土路和山道前往那些航道。
Prior to 1815, western farmers who did not live on navigable waterways were connected to them only by dirt roads and mountain trails.
它穿过田野，越过路旁的树篱。
距离摄像机越远，路旁的对象看起来也就越小。
Objects along the road become smaller the further the distance to the camera.
应用推荐