Sometimes, sciencecan seem overwhelming. There are complicated concepts, unimaginably large - or small - objects, and vast distances that most people have a hard time understanding.

VOA: standard.2010.05.04

This is the world, particularly the legal world, catching up with where religious and cultural concepts have been for a very long time.

这就是这个世界，尤其是法律世界，向宗教和文化概念靠拢的地方,而后两者已存在很长时间了。

普林斯顿公开课 - 人性课程节选

for exam 2, you still need to know and understand everything you learned in exam 1, but you can put off learning it completely until we get through, at least, next Wednesday before we start maybe spending time on these concepts outside of class.

为了掌握第二次考试的内容，你仍然需要知道和理解,在第一次考试前所学的全部知识，但是你可以先放一放，等到我们进行到，至少在下周三我们可能开始不在课堂上,讲这些内容之前。

麻省理工公开课 - 化学原理课程节选

I'm going to talk about - take sort of the general concepts that we talked about last time and talk about how they apply in two physiological systems, the nervous system first and then the immune system.

我将要谈到几个基本的概念,我上节课已经讲过一些了,再讲讲这些概念在两个生理系统中的应用,首先是神经系统然后是免疫系统

耶鲁公开课 - 生物医学工程探索课程节选

Again, the point today is not for you to understand in detail all these mechanisms but to understand how those basic concepts we talked about last time, basic concepts of cell communication if arranged in the right kinds of ways can lead to complex outcomes.

再说一次 今天的重点不是,要你理解这些机制的细节,而是借此理解上节课讲的基本概念,细胞通讯的基本概念如果安排得当,可以产生非常复杂的反应

耶鲁公开课 - 生物医学工程探索课程节选