back door
借助非正规途径或手段取得成功或获得利益
口语·指通过非正规途径达成目的
英文释义
An unofficial or indirect means of achieving something, often through manipulation or deception.
例句
He got the job through the back door by befriending the manager's son.
典故来源
原指房屋后门，引申为避开正规渠道的隐秘或非正当途径。