这包括建造、维护和使用交通系统的公共成本和私人成本。

This included both the public and private costs of building, maintaining and using a transport system.

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问题在于这条路太窄了，维护不善，而且这里的交通比其他地方都要拥挤。

The problem is that the road is too narrow and badly maintained while the traffic here is heavier than anywhere else.

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亚特兰大，佐治亚(CNN)——交通拥挤，汽车的维护，以及高油价，高额保险账单让许多城市上班族很头痛。

Atlanta, Georgia (CNN) — Traffic congestion and headaches, as well as car maintenance, high gas prices and insurance bills bog down many city commuters.

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