Concept lattice is a useful tool of knowledge representation. In this paper, we discuss the relations between the two operators of the concept knowledge systems based on the construction method.

概念格是知识表现的有力工具，在概念格基础上，利用构造方法，首先探讨概念知识系统上两个算子之间的关系。

youdao

Description logic system offer a set of typical inference services, such as the classification, satisfaction and realization of concept, knowledge consistency checking, etc.

描述逻辑系统可以提供一些典型的推理服务，例如，概念分类、概念的可满足性、概念的实现和知识的一致性检测等。

youdao

And I wanted to show that common knowledge is not such an obvious a concept, as I've made it seem on the board.

我想让大家明白,共同知识并不是像我写在黑板上的,是一个想当然的概念

耶鲁公开课 - 博弈论课程节选

They are really a difficult concept to grasp when you have no base knowledge of it.

当你没有基础知识时，冠词确实很难掌握。

韩国人经常犯的失误 - SpeakingMax英语口语达人

"We believe that their contribution is indispensable for realizing UNESCO's concept of knowledge societies which are built on universal access to information and freedom of expression".

UNESCO: Communication et information

This gap in knowledge from concept to practice needs to be bridged in order for people to be able to retire and to have a satisfying retirement.

FORBES: Three Key Investment Concepts Everyone Needs to Know

This toolkit has been developed to introduce and promote the concept of inclusive education and impart knowledge and skills to the educationists for creation of inclusive environment in schools, she informed the participants.

UNESCO: EDUCATION