vent spleen
发泄怒气，表达愤怒或不满
正式·表达强烈不满
英文释义
To express anger or frustration, usually by venting one's emotions in a vehement or spiteful manner
例句
He vented spleen about the unfair decision for hours.
典故来源
源自古代医学理论，认为脾脏是愤怒情绪的源头，发泄脾脏即发泄怒气。