The city has got a traffic problem.
这城市交通有问题。
City traffic is a big problem in some cities in the world, especially in big cities.
在世界上的一些城市中城市交通是一个大问题，尤其是大城市。
City traffic is a big problem in some cities in the world, especially in big cities.
在世界的许多城市尤其是大城市，市内交通问题是一个大问题。
Heavy traffic is the biggest problem in this city.
交通拥挤是这个城市中最大的问题。
He is interested only in the traffic problem of an entire city.
他只对整个都市的交通问题感兴趣。
He is interested only in the traffic problem of an entire city.
他只对整个都市的交通问题感兴趣。
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