... 工程车 mobile work shop 公路测试车 road testing vehicle 公路护栏抢修车 road guardrail rush repair vehicle ...
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road testing vehicle
道路试验车辆
以上为机器翻译结果，长、整句建议使用 人工翻译 。
In road testing a hydraulic hybrid truck in suburban Detroit, Michigan, the EPA found the vehicle used 40 to 50 percent less fuel than conventional diesel trucks while reducing carbon emissions by one third.
CNN: EPA, UPS join to launch eco-friendly hybrid trucks
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