Phrase
common knowledge
/ˈkɔmən ˈnɔlidʒ/
noun
常识；众所周知的事
Something that is known by most people and therefore cannot reasonably be disputed.
- 1.
That which is known by most people, and thus cannot reasonably be contested.
大多数人都知道因而难以合理争辩的事实。
- 2.
A special kind of knowledge for a group of agents, such that when all the agents in a group G know p, they all know that they know p, they all know that they all know that they know p, and so on ad infinitum.
一种群体知识:群体G中所有人皆知p,且皆知所有人皆知p,如此无限递归。
公共知识；大多数人都知道因而难以合理争辩的事实。；一种群体知识:群体G中所有人皆知p,且皆知所有人皆知p,如此无限递归。；大家都知道的事；常识
In use
It is common knowledge that smoking is harmful to health.
In the office, it's common knowledge that the manager will retire next year.
She assumed it was common knowledge about the new policy, but many had not read the email.
Learner notes
Grammar Note
常用作不可数名词。
Dictionary facts from ECDICT, WIKTIONARY.