出处：按学科分类—语言、文字 中国对外翻译出版公司《汉英成语词典》第106页（199字）
比喻时间虽短，却好似长久，例这对夫妻新婚燕尔，虽仅小别数日，却有一日三秋之感。
Having been married but a short time，their separation even for a few short days，seemed like eternity to them．