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perfidious
01
背信弃义的
relating to someone or something that is untrustworthy and disloyal
例子
The perfidious diplomat pretended friendship while secretly plotting against the alliance.
The perfidious actions of the spy jeopardized national security, revealing classified information to enemy forces.
The novel depicted a perfidious character who deceived everyone around him.
Despite making promises of loyalty, the perfidious advisor betrayed the trust of the royal council.
The perfidious act of spreading false rumors damaged the politician's reputation irreparably.
