catharsis
noun [uncountable, countable] (specialist)the process of releasing strong feelings, for example through plays or other artistic activities, as a way of providing relief from anger, mental pain, etc. 宣泄，净化（如通过戏剧或其他艺术活动） Word Originearly 19th cent. in the sense purification: from Greek katharsis, from kathairein ‘cleanse’, from katharos ‘pure’. The notion of “release” through drama derives from Aristotle's Poetics.