birds of a feather flock together
物以類聚
口語·物以類聚
英文釋義
people of similar interests, character, or backgrounds tend to stick together
例句
I'm not surprised they're friends; birds of a feather flock together.
典故來源
源自16世紀英國諺語,字面意為同類鳥聚集成群,比喻性格或興趣相似的人容易聚在一起。