Researchers have provided fresh evidence of a growing gap between vehicle emissions in laboratory tests and their performance on the road, as questions mount about the carmakers’ conduct in the wake of the Volkswagen scandal.
研究人员提供的最新证据表明，汽车在实验室检测中得出的尾气排放值与它们在实际道路上行驶时的排放值之间差距越来越大。大众汽车(Volkswagen)尾气造假丑闻发生后，汽车制造商的操守受到越来越多的质疑。
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