bird of passage
經過的人或暫時逗留的人
書面/口語·形容漂泊不定的人
英文釋義
someone who stays in a place for only a short time and then moves on
例句
He's a bird of passage, always moving from one city to another for work.
典故來源
源自候鳥遷徙的習性，比喻像候鳥一樣短暫停留某地后便離開的人。