任何时候都尝试保存一些自己的复习资料-即使它们一如记录了一些复习想法的笔记卡片般简单。

Try keeping some review materials on you at all times - even if it is something as simple as a note card with review concepts on it.

youdao

首先，我想简单，复习一下我们知道的，有关于圆形轨道的知识，我在黑板上写下了，我们已有的知识。

I first want to review with you briefly what we know about circular orbits, so I wrote on the blackboard everything we know about circular orbits.

youdao

这是你们教材十五页上的一些简单材料，我们复习一下，我们说这是个入门课程，所以假设之前你们没有任何相关知识。

It's simply material found on page fifteen of your textbook but let's review it. We say this is a beginning course so we assume no previous knowledge.

youdao

It's simply material found on page fifteen of your textbook but let's review it. We say this is a beginning course so we assume no previous knowledge.

这是你们教材十五页上的一些简单材料,我们复习一下,我们说这是个入门课程,所以假设之前你们没有任何相关知识

耶鲁公开课 - 聆听音乐课程节选