柯林斯词典gearbox /ˈɡɪəˌbɒks/ (gearboxes) 1. N-COUNT A gearbox is the system of gears in an engine or vehicle. 齿轮箱 返回 gearbox剑桥词典a metal box containing the gears in a vehicle 齿轮箱，变速箱 返回 gearbox