TTCTTTa train or busticket that lets you go somewhere at a cheaperprice than usual, if you go there and back on the same day 〔火车或公共汽车票价较优惠的〕当日来回票
Examples from the Corpus
day return• She left early, bought a day return, and sat back to enjoy the journey.• Young orangs living free in the forest all day return in the afternoon for their meal of bananas and milk.• Since February 22, passengers buying a cheap day return have been able to get a second ticket for £1.• Typicalfares: day return from Kilburn to Blackfriars, £2.40.