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丰田公司于1997年研制成功的Prius混合动力电动汽车，是以汽油发动机和电动机为混合动力系统（Hybrid System）。该系统技术居世界领先水平，与以往汽油机轿车相比，可将燃油经济性提高一倍，而尾气排放大幅降低。它是世界上第一辆实现商业化生产的电动汽车。今年，丰田公司打
Toyota developed the Prius hybrid electric vehicle in 1997 with a gasoline engine and electric motor as the hybrid system. The system technology is the world leader, doubling fuel economy and drastically reducing exhaust emissions compared to previous gasoline-powered sedans. It is the world’s first commercial production of electric vehicles. This year, Toyota beat