prick up ears
聚精會神地傾聽,注意力高度集中
口語·表達突然感興趣
英文釋義
to pay close attention or become suddenly interested in something that has been said or heard
例句
The kids pricked up ears when Mom mentioned ice cream.
典故來源
與'prick up _ ears'同源,強調耳朵豎起動作,源自動物本能反應。