1N-COUNT (关系、行为等的)不正常,异常 If you refer to a dysfunction in something such as a relationship or someone's behaviour, you mean that it is different from what is considered to be normal. (关系、行为等的)不正常,异常 [formal]
...his severe emotional dysfunction was very clearly apparent.
显而易见他情绪严重异常。
2N-VAR 机能障碍 If someone has a physical dysfunction, part of their body is not working properly. 机能障碍 [medicine]