overhaul /ˌəuvəˈhɔ:l/ I. vt. 彻底检查，大修：A mechanic overhauled the car’s motor with some new parts.一个修理工对那辆汽车的发动机进行了彻底的检修，换了一些新部件。‖II. n. [c] 检查，大修：a major overhaul of environmental policies环保政策的全面修订It is generally appreciated that the rail network needs a complete overhaul.众所周知，铁路系统需要大检修。