work off        
vt.使（感情）泄。令（焦虑）解。（怒气）消散 abreact, work off
vr. 摆脱侵略性。散余精。牢骚。泄郁积感情。消除怒火 let off steam, get rid of one's aggressions, let one's aggressions out on, let one's anger out on