all is fair in love and war
愛情和戰爭中,一切皆公平
口語·用于辯解極端行為
英文釋義
any type of behavior is acceptable or justified when dealing with love or war
例句
He stole her from his best friend, but all is fair in love and war.
典故來源
源自17世紀,源于戰爭和愛情中道德規則常被放寬的觀念。