重庆是中国特大城市之一，具有三千多年的悠久历史。
Chongqing is one of the largest cities in China with a long history of more than 3,000 years.
首先通过比较中国和世界上有代表性的几座大城市交通设施建设情况，提出在中国特大城市建设立体交通体系的必要性。
Necessity of multi modal system construction in Chinese very big city through comparing Beijing and Shanghai with main big city of other country is proposed.
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