我并不为卡尔感到难过。他了解实情，他知道他必须做什么，但又没能做成。

I don't feel sorry for Carl. He knew the score, he knew what he had to do and couldn't do it.

《柯林斯英汉双解大词典》

想知道如何灵活，你必须了解市场。

To know how flexible to be, you have to know the market.

youdao

学习了解食物的不同阶段，并知道如何正确烹调它们。

Learn to know the different periods of foods and know how to cook them in the right way.

youdao

I began with their ideas of Japan and what did they know, because I knew that they knew very little.

我先让他们写了对日本的看法,和了解多少，因为我知道他们的知识很有限。

麻省理工公开课 - 媒体、教育、市场课程节选

Well, I don't really know a whole lot, but I know, the alumni come back, a lot of them come back,

嗯，我不是完全了解，但是我知道，校友回来，很多校友回来，

对于返校日 - SpeakingMax英语口语达人

So, doing those probability density dot graphs, we can get an idea of the shape of those orbitals, we know that they're spherically symmetrical.

概率密度点图上,我们可以对这些轨道的形状，有个大概了解,我们知道它们是球，对称的,我们今天不讲。

麻省理工公开课 - 化学原理课程节选