Catching a diesel train is now twice as polluting as travelling by car for an average family, the Rail Safety and Standards Board admitted recently.
铁路安全与标准委员会认为，对于现在的普通家庭来说，乘坐柴油货车所造成的污染是乘坐私家车的两倍。
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The team compared the lifecycle emissions of high-speed electric rail with transport by car, by heavy rail (the Amtrak diesel system) and by air.
研究小组将高速列车同汽车，火车（美国的全国铁路乘客公司的柴油机车）以及飞机的排放周期进行了比较。
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This paper introduces the general arrangement, main technical parameters, diesel engine, transmission system, car body, braking system and running gear of GCD-470 heavy rail motor car.