red handed
当场抓到、当场被发现犯罪或不当行为的状态
口语·当场抓获
英文释义
to be caught in the act of doing something wrong or illegal
例句
The thief was caught red handed stealing the wallet.
典故来源
源自苏格兰法律，指凶手手上沾满鲜血被当场抓获。