slip through the net
逃脱或避开了监管或控制，尤其是通过巧妙或不完整的方式
口语·形容逃脱或未被注意
英文释义
to escape or go unnoticed; to be missed or omitted
例句
Despite the security checks, a few items slipped through the net.
典故来源
源自捕鱼或狩猎场景，net指网，slip through意为从网孔中逃脱，引申为未被发现或遗漏。