麻烦翻译一段话，谢谢

With the growth of car and keep the world's dwindling oil resources; automobile exhaust in urban air pollution increased. Countries in the world are doing everything possible to reduce vehicle fuel consumption and committed to the maintenance of clean fuels and new energy development research, in order to reduce the excessive reliance on oil resources and automobile exhaust on the environment hazards. China has successively promulgated a series of encouraging energy conservation and environmental protection and automotive research and development of new energy policies to ease the oil supply and demand conflicts and environmental problems. At present, the alcohol fuel, liquefied petroleum gas, natural gas and other clean energy in the world-wide have been more extensive use. And achieved a certain degree of energy conservation and environmental protection effect. DME, hydrogen fuel cells, biodiesel and other new clean energy are also being developed. Hydrogen fuel cells as an ef