求翻译：　现代交通工具已由过去的牲畜拖拉演变为现在的汽车、火车、轮船、飞机，效率大大提高，缩短了国与国之间，人与人之间的距离，从北京到纽约，如果坐飞机，只需要8个小时就可以到达，这在古代是不可想象的。但同时， 如人们所说，万物都有其两面性。交通工具的发达，给人类带来了方面和快捷，却没有给人类带来幸福。21世纪是全球化的世纪，交通工具的使用更加频繁，但随之也带给人类无尽的烦恼甚至是灾难。是什么意思？

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Modern transportation has been the Past evolution of livestock to drag the car now, trains, ships, aircraft, and efficiency, and reduce the state to state, and the distance between people, from Beijing to New York, if you travel by plane, you need only 8 hours to arrive in the ancient times, this is

The modern transportation vehicle has hauled the evolution by the past domestic animal for the present automobile, the train, the steamboat, the airplane, the efficiency enhances greatly, reduced between the country and the country, between human and human's distance, from Beijing to New York, if th

Modern means of transport from the past of livestock haul evolved into today's cars, trains, ships, aircraft, efficiency greatly improved, reduced between States, distances between people and people, from Beijing to New York, if you fly, you only need 8 hours you can reach, which in ancient times wa

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