火车的平均速度比我们骑自行车的速度快不了多少。The train's average speed was no better than that of our bicycles.公共汽车和火车的人均燃料耗费量比轿车小得多。Buses and trains use much less fuel per person than cars.我是个酷爱看火车的人。I was a devoted train spotter....