know-all

noun

1. 自以为无所不知的人；百事通
   a person who behaves as if they know everything

1. 自以为无所不知的人；百事通
   If you say that someone is a know-all, you are critical of them because they think that they know a lot more than other people.

in AM, use 美国英语用 know-it-all

1. We have entered the age of "peep culture": a tell-all, show-all, know-all digital phenomenon that is dramatically altering notions of privacy, individuality, security, and even humanity.
   我们已经进入了“偷窥文化”时代：这是一个倾诉所有、表现所有、知道所有的数码现象，它戏剧化地改变了人们对私隐、个人、安全、甚至是人性的普遍认识。
2. He's just a smart-aleck know-all who thinks he's got all the answers.
   他只是一个妄自尊大的万事通，以为自己知道所有的答案。
3. So the nobleman had his carriage hitched up, rode out to the village, and asked him if he were Doctor Know-All.
   于是大财主套上马车，驱车奔向那个村庄，问螃蟹是不是万事通大夫。
4. He's such a loudmouth and know-all.
   他是个高谈阔论而又自认无所不知的人。
5. Arrogance and the know-all attitudes among some police offices will only further alienate public co-operation with the police.
   部分警员傲慢和自以为是的态度，只会疏远人民和警方和合作。
6. The author of this article attempts to illustrate the role of pragmatic principles in the interpretation of literary works through analysis of S Somerset Maugham's short story "Mr. Know-All".
   本文试图通过分析英国作家毛姆的短篇小说《万事通先生》（Mr.Know-all）来说明语用原则对文学作品理解的作用。
7. How to interpret the structures, content and writing skills in other stream-of-consciousness fictions through the example discussed? The most common writing techniques in stream-of-consciousness fictions are direct and indirect interior monologue, dramatic monologue, and know-all description.
   怎样通过范例，来理解更多意识流作品的内容结构及写作特点？在意识流作品中，最常见的写作技巧是是直接的和间接的内心独白，戏剧性独白和无所不知的描写。

noun

1. someone who thinks he knows everything and refuses to accept advice or information from others

   Synonym:    know-it-all