(subclass OpenTopRailcar FreightCar) | Transportation.kif 2199-2199 | 敞篷车 是 货车 的 subclass |
(subclass Flatcar OpenTopRailcar) | Transportation.kif 2177-2177 | 敞车 是 敞篷车 的 subclass |
(subclass RotaryDumpCar OpenTopRailcar) | Transportation.kif 2218-2218 | 旋转式自卸车 是 敞篷车 的 subclass |