The board was shocked by the perfidy of a manager who leaked our pricing to rivals.

董事會對一名經理將我們的定價洩漏給對手的背信行為感到震驚。

Customers accused the airline of perfidy after it quietly canceled their promised refunds.

航空公司悄悄取消承諾的退款後，顧客指控其背信棄義。

The investors called the partner's secret deal with a competitor an act of perfidy.

投資人稱該合夥人與競爭對手的秘密交易是一種背叛行為。