an event causing great and often sudden damage or suffering; a disaster (常突如其来的)大灾难;大灾祸 an environmental catastrophe. 环境大灾难。 [mass noun]leading the world to catastrophe. 将世界引入劫难。 ■the denouement of a drama, especially a classical tragedy (尤指古典悲剧的)结局
语源
mid 16th cent. (in the sense 'denouement'): from Latin catastropha, from Greek katastrophē 'overturning, sudden turn', from kata- 'down' + strophē 'turning' (from strephein 'to turn')