e·ter·ni·ty/ɪ`tɜnətɪ; ɪˈtɜːnɪti/ n 1 [U] time without end, especially the time after death that some people believe continues for ever 永恒 2 an eternityinformal a period of time that seems very long because you are bored, anxious etc 【非正式】 〔因厌倦、焦虑等〕显得漫长的时间: We waited for what seemed like an eternity. 我们一直在无尽头似地等着。