美国的道路建设和修缮由联邦燃油税支付，后者被纳入公路信托基金统一管理。
The building and repairing of roads in America is paid for by a federal petrol tax, which replenishes the highway trust fund.
新项目将修缮3个国家1200公路长的道路。
有些石头已经倒下，另外有些被取走用以建筑房屋或修缮农庄的道路；此外，几百年来，前来游览的观光客也加重了其受损的程度。
Some of the stones have fallen down, others have been carried away to be used for building or to repair farm tracks and over centuries visitors have added their damage too.
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