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汽车是一种高效率的运输工具,它在国防建设和社会主义建设事业中发挥着重要的作用。汽车具有高速机动能力,然而速度高就会带来不安全因素,在行车中若不谨慎就会发生事故。
Automobiles are an efficient means of transportation and play an important role in national defense construction and socialist construction. Cars have high-speed mobility, but high speed will bring unsafe factors, if not careful in the driving accident.