Around half of all surface-transportation funding and 20% of mass-transit funding comes from the states, many of which face budgetary woes of their own.

一半左右的地上交通经费和20%的公共交通经费都来自各州，而很多州都面临预算灾难。

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Urban rail transport and surface public transit are two main parts of urban public transport system.

轨道交通与地面常规公交共同支撑着城市公共交通系统。

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