The board dismissed the perfidious manager who had secretly leaked client data to competitors.

董事會開除了那位暗中把客戶資料洩漏給競爭對手的奸詐經理。

Our lawyer warned us that the perfidious supplier might break the shipping contract again.

我們的律師警告說，那家背信棄義的供應商可能會再次違反運送合約。

Customers felt betrayed by the perfidious sales agent who promised refunds he never processed.

那位奸詐的業務員承諾退款卻從未處理，讓顧客覺得遭到背叛。