round trip

(a) journey to one or more places and back again, often by a different route 环程旅行（常不循原路线返回）. (b) (US) = return2 5: [attrib 作定语] a ,round-trip `ticket 一张往返票.

roue, rouge, rough, rough house, rough luck, rough-and-tumble, rough-hewn, roughage, roughcast, roughen, roughly, roughneck, roughness, roughshod, roulette, round, round and round, round brackets, round off, round robin, round up, round-eyed, round-shouldered, round-table, round-up, roundabout, rounded, roundel, rounders, Roundhead, roundish, roundly, roundness, roundsman, rouse, rousing, roustabout, rout, route, route march,