(1)邪恶(堕落)，腐败(grave moral fault;corruption)[U]：a campaign against～打击罪恶的运动;～squads(取缔赌博、吸毒、卖淫的)警察缉捕队;～and corruption in the Secret Service 特工处的堕落腐败;(detectives) smash～rings(侦探)粉碎犯罪集团;He descended to a life of crime and～. 他的生活陷入犯罪与堕落。The police made several raids to clean up～in the city. 警方进行几次大搜捕，清理城市的罪恶活动。〖同〗corruption;〖反〗virtue， morality;

(2)(具体的)坏事(immoral practice)[C]：Greed/Lying/Torture/Cruelty is a terrible～. 贪婪/说谎/严刑/残忍是可怕的不道德行为。Gambling often leads on to other～s. 赌博常常导致其他犯罪行为。He's a wild boy but there is no～in him. 他是个难以约束的孩子，但是没有坏心眼。

(3)毛病，缺点(fault;shortcoming) [C]：Gossiping/Laziness has become her only (greatest)～. 传闲话/懒惰成了她唯一(最大)的缺点。〖同〗fault，shortcoming，weakness;〖反〗accomplishment;

(4)坏习惯(bad habit)[C]：Smoking is not one of my～s. 我并没有吸烟的坏习惯。Mr Jones recommended the horse as having no～s. 琼斯先生推荐说这匹马不是烈性马。