/'nɒlɪdʒ; `nɑlɪdʒ/
n
1 [U] understanding 了解; 理解
*A baby has no knowledge of good and evil. 小孩儿不解善恶.
2 [U, sing] all that a person knows; familiarity gained by experience 个人的知识; 见闻
*I have only
(a) limited knowledge of computers. 我的计算机知识很有限.
* My knowledge of French is poor. 我不太懂法语.
3 [U] everything that is known; organized body of information 学问; 学识; 知识
*all branches of knowledge 各门学问
* the sum of human knowledge on this subject 人类对这一学科的知识总和.
4 (idm 习语)be common/public knowledge be known by everyonein a community or group 人所共知
*It's pointless trying to keep your friendship secret it's common knowledge already. 你们无谓将友情保密--其实已尽人皆知了. come to sb's `knowledge (fml 文) become known by sb 被某人知悉
*It has come to our knowledge that you have been cheating the company. 据我们了解你一直欺骗公司. to one's `knowledge
(a) as far as one knows 据自己所知
*To my knowledge, she has never been late before. 据我所知, 她从未迟到过.
(b) as one knows to be true 确知属实
*That is impossible, because to my (certain) knowledge he was in France at the time. 那不可能, 因为我（确实）知道那时他在法国. to the best of one's belief/knowledge => best3. with/without sb's `knowledge having/not having informed sb 告知[未告知]某人
*He sold the car without his wife's knowledge. 他瞒着妻子把汽车卖了.

n[U]
[Date: 1300-1400; Origin: knowledge 'to acknowledge' (13-18 centuries), from know]
the information, skills, and understanding that you have gained through learning or experience
　You need specialist knowledge to do this job.
knowledge of
　His knowledge of ancient civilizations is unrivalled.
knowledge about
　the need to increase knowledge about birth control
　Many of the students did not have much knowledge of American history.
salesmen with good technical knowledge of what they are selling
An in-depth knowledge of accounting is not necessary as training will be given.
The equipment is complex and requires specialist knowledge to be repaired.
The year studying in the US gives students personal knowledge of American culture.
someone with a background knowledge of engineering
a general knowledge quiz
when you know about a particular situation or event, or the information you have about it
　Evans denied all knowledge of the robbery.
　I had no knowledge of this whatsoever until The Times contacted me.
(secure/safe) in the knowledge that
　Kay smiled, secure in the knowledge that she was right.
be common/public knowledge
(=be known about by everyone)
　Their affair is public knowledge.
to (the best of) sb's knowledge
(=used to say that someone may not know the true facts)
　To the best of my knowledge the new project will be starting in June.
　To our knowledge, this is the first time it's happened.
　'Is it true that she's leaving the company?' ' Not to my knowledge (=I do not think so) .'
without sb's knowledge
　He was annoyed to find the contract had been signed without his knowledge.
　She acted with the full knowledge of her boss (=her boss knew about her action) .
→general knowledge,working knowledgeatworking¹ (9)

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COLLOCATES for sense 1
have knowledge
acquire/gain knowledge (=learn something)
technical/scientific knowledge
in-depth knowledge
detailed knowledge
specialist knowledge (=knowledge about a particular subject)
first-hand/personal knowledge (=knowledge from experiencing something for yourself)
background knowledge (=knowledge you need to understand or do something)
general knowledge (=knowledge about a lot of different subjects)
a thirst for knowledge (=when you want very much to learn things)
HINT sense 1
Do not say that you 'learn knowledge' or 'get knowledge'. Say that you learn a lot or learn a great deal:You can learn a lot through travel.

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