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优先发展城市公共交通是全面落实科学发展观、构建资源节约型和环境友好型社会的重要举措。目前,以传统能源——石油为燃料的城市公交车在节能减排方面还面临着复杂的技术难题。
Give priority to the development of urban public transport is an important measure to fully implement the scientific concept of development and build a resource-saving and environment-friendly society. At present, the traditional energy-oil-fueled urban buses face complicated technical problems in energy saving and emission reduction.