have big ears
注意听
口语·提醒注意隔墙有耳
英文释义
to be an attentive listener or to be knowledgeable about secret or private information
例句
Be careful what you say—the walls have big ears in this office.
典故来源
源自“墙壁有耳”的古老说法，比喻耳朵大能听到秘密，强调偷听或消息灵通。