n.奸诈，欺骗(行为)

His duplicity in the business deal cost the company millions of dollars.
他在商业交易中的欺诈行为使公司损失了数百万美元。
The politician's duplicity was exposed when his private emails contradicted his public statements.
政客的两面性在私人邮件与公开声明相矛盾时被揭露出来。
She was shocked to discover her friend's duplicity in spreading rumors about her behind her back.
她震惊地发现朋友在背后散布关于她的谣言，表现出了两面三刀的一面。
His duplicity in pretending to support the project while secretly sabotaging it was eventually uncovered.
他表面上支持项目而暗中破坏的两面派行为最终被揭露。
The detective unraveled the mystery by uncovering the duplicity of the butler, who had a secret motive for the crime.
侦探通过揭露管家的两面性解开了谜团，管家对犯罪有秘密动机。
Her duplicity in maintaining relationships with both rivals led to a devastating betrayal for everyone involved.
她在与两个对手同时保持关系中的不诚实导致了所有相关人员的惨痛背叛。
The spy's duplicity allowed him to gather crucial information from both sides without raising suspicion.
间谍的两面手法使他能在不引起怀疑的情况下从双方收集到关键信息。
It was the duplicity of the CEO that ultimately led to the downfall of the once-thriving corporation.
正是CEO的两面派行径最终导致了这个曾经繁荣的公司的垮台。
In the play, the protagonist's duplicity is a central theme, as he leads a double life to escape his past.
在这出戏剧中，主角的两面性是一个核心主题，他过着双重生活以逃避过去。
The historian uncovered evidence of the general's duplicity during the war, revealing he had secretly negotiated with the enemy.
历史学家发现了战争期间将军两面性的证据，揭示他曾秘密与敌人谈判。