second childhood
第二次童年, 老年人在晚年或退休后恢復年輕時的興趣和行為
日常·描述老年人返老還童
英文釋義
To behave in a childlike manner, typically as a result of old age or mental decline
例句
Grandpa has entered his second childhood, playing with toys all day.
典故來源
源自對老年人行為退化的觀察,比喻回歸童年狀態。