"I think it was an upholding of the basic principles of freedom of speech.

VOA: standard.2009.10.23

Of course, she needs to know the basic principles, but she's also talking about it an enzyme, so she needs to know about enzyme catalysis.

她需要知道这表上的许多东西，当然她需要知道到这些基本原理，她研究的是一种酶。

麻省理工公开课 - 化学原理课程节选

What are the sort of basic principles that lead to these differences between cells?

是怎样的基本原理,导致了细胞间的差异呢

耶鲁公开课 - 生物医学工程探索课程节选

I think that book will give you all the basic principles you need in calculus of one variable, more variables, elementary complex numbers, maybe solving some problems with vectors and so on, which you're going to get into.

我想那本书会给你所需的所有基本知识,包括一元和多元微积分,简单的复数运算,可以解决一些与矢量有关的问题,而这正是你们将要学的

耶鲁公开课 - 基础物理课程节选