求翻译：中国大城市所面临的各种交通问题中，交通堵塞和拥挤是最为突出、也是最为普遍的问题。北京、上海、武汉、西安、广州等超大城市，交通堵塞现象已日趋严重，成为影响城市经济发展的重要制约因素是什么意思？

Chinese cities are facing traffic problems, traffic congestion and congestion is the most prominent and most common problem. Beijing, Shanghai, Wuhan, Xi'an, Guangzhou and other large cities, traffic jams have become increasingly serious, with an impact on the city's economic development constraints

China's largest city in facing the problem of traffic congestion, and traffic congestion and is the most prominent, and most common problems. Beijing, Shanghai, Wuhan, Xian, Guangzhou, and other mega-cities, traffic congestion has become an increasingly serious impact on urban economic development,

The Chinese big city faces in each kind of transportation question, the traffic jam and crowded is most prominent, also is the most universal question.Beijing, Shanghai, Wuhan, Xi'an, Guangzhou and so on ultra big city, traffic jam phenomenon already day by day serious, becomes affects the urban eco

Traffic problems facing large cities in China, traffic congestion and overcrowding is most prominent, is the most common questions. Beijing, Shanghai, Wuhan, Xian, Guangzhou and other large cities, traffic jams have become more serious, important constraints become urban economic development

Traffic problems facing large cities in China, traffic congestion and overcrowding is most prominent, is the most common questions. Beijing, Shanghai, Wuhan, Xian, Guangzhou and other large cities, traffic jams have become more serious, important constraints become urban economic development