let sleeping dogs lie
不要惹是生非，还是保持现状比较好
口语·劝人别惹事
英文释义
to avoid interfering in a situation in order to prevent trouble or conflict
例句
Don't bring up that old argument; let sleeping dogs lie.
典故来源
源自14世纪谚语，'sleeping dogs'比喻潜在麻烦，避免唤醒。