(subclass EngineCycle Motion) | Cars.kif 80-80 | EngineCycle 是 运动 的 subclass |
(subclass FourStrokeEngineCycle EngineCycle) | Cars.kif 134-134 | FourStrokeEngineCycle 是 EngineCycle 的 subclass |
(subclass TwoStrokeEngineCycle EngineCycle) | Cars.kif 251-251 | TwoStrokeEngineCycle 是 EngineCycle 的 subclass |