(固定路线的)运输系统通常有固定路线的公有或私有贷运或客运系统,如船运、空运或汽运 A passenger or cargo system of public or private transportation, as by ship, aircraft, or bus, usually over a definite route.
公共汽车一种载客的长型机动车辆,通常沿指定路线行驶 A long motor vehicle for carrying passengers, usually along a fixed route.
我们偏离原定路线走了好几英里。 We went some (ie several) miles out of our way.