1. (言辞或行为)非正式的,亲切随便的
Informal speech or behaviour is relaxed and friendly rather than serious, very correct, or official.
e.g. She is refreshingly informal...
她不拘礼节,让人耳目一新。
e.g. His friend was less good-looking, but a lot more informal and relaxed.
他的朋友没那么英俊,却随意、放松得多。
informallyShe was always there at half past eight, chatting informally to the children.
她总是8点半到那里,和孩子们亲切地闲聊。
informalityHe was overwhelmed by their friendly informality.
他们的友好随和让他受宠若惊。
2. (场合等)非正式的,随意的
An informal situation is one which is relaxed and friendly and not very serious or official.
e.g. I would like it to be an informal occasion...
我希望把它办得不那么正式。
e.g. The house has an informal atmosphere.
房间里有一种轻松随意的氛围。
informalityEleanor enjoyed the relative informality of island life.
埃莉诺喜欢岛上相对轻松随意的生活。
3. (衣服)非正式场合穿的,休闲的
Informal clothes are casual and suitable for wearing when you are relaxing, but not on formal occasions.
e.g. Most of the time Jenny needs informal clothes...
大部分时间珍妮需要休闲服装。
e.g. For lunch, dress is informal.
吃午饭时可以穿休闲服。
informallyEveryone dressed informally in shorts or jeans.
大家都穿得很休闲,不是穿了短裤就是穿了牛仔裤。
4. 非正式的;非正规的
You use informal to describe something that is done unofficially or casually without planning.
e.g. The two leaders will retire to Camp David for informal discussions.
两位领导人将到戴维营进行非正式讨论。
e.g. ...an informal meeting of EU ministers...
欧盟部长非正式会议
informallyHe began informally to handle Ted's tax affairs for him.
他开始非正式地为特德打理税务。