求翻译：汽车在二十世纪改变了世界，尤其是在美国或和其他工业国家。汽车确实于我们大有用处，但也带来了一些危害，比如声音污染，空气污染以及公路死亡事故。据报道汽车事故被列为全世界导致死伤的主要原因之一。可庆幸的是，现代发明家们正在重新发明汽车。新的推进系统（propulsion system), 燃料，设计以及制造汽车的手段在过去的十年中得到迅速发展。是什么意思？

The automobile changed the world in the twentieth century, especially in the United States or other industrialized countries. The car is indeed our very useful, but it also brings some hazards, such as noise pollution, air pollution and highway fatalities. It is reported that car accidents are class

Cars in the 20th century changed the world, especially in the United States and other industrialized countries. Car is indeed in our very useful, but it has also brought some hazards, such as noise pollution, air pollution and road death. Motor vehicle accidents have been reported as one of the worl

正在翻译，请等待...

Cars in the 20th century have changed the world, especially in the United States and other industrial countries. Car does in our useful, but it also has a number of hazards, such as noise pollution, air pollution and road fatalities. It was reported killed and injured in car accidents were classifie

正在翻译，请等待...