long haul
noun
1- a long distance (in reference to the transport of goods or passengers)长途货运; 长途客运：
as modifier a long-haul flight.长途（运输）飞行。
1.1
- a prolonged and difficult effort or task费时费力的工作：
implementing the White Paper is likely to be a long haul.
要做到白皮书中所提出的要求很可能需要长期努力。
短语
over the long haul
- chiefly N. Amer.over an extended period of time〈主北美〉长远地; 从长远的观点看。