fort.night.lyadj.(形容词)Happening or appearing once in or every two weeks.两星期一次的,隔周的: 每两周发生或出现一次的adv.(副词)Once in a fortnight.两周一次地n.(名词)【复数】 fort.night.lies A publication issued once every two weeks.双周刊:隔周发行的刊物