每日商务英语 第283期:编外的 帐外的

off book 编外的，帐外的

英文释义

doing something without following the standards or procedures.

例句

Any unit or individual that accepts off-book rebate in secret shall be deemed and punished as taking bribes.

对方单位或者个人在帐外暗中收受回扣的，应该以受贿论处。