We tend to use the term to refer to information we have about categories and intuitions we have about the typicality, our frequency of certain features of categories.

我们会用这个词来代表,我们对某些类别掌握的信息,用它来指代我们掌握典型性的直觉，指代某个类别反复出现的特性。

耶鲁公开课 - 心理学导论课程节选

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。

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But still, the amount of words we know is staggering.

但我们所掌握的词量依然令人吃惊

耶鲁公开课 - 心理学导论课程节选