我突然明白了他在做什么。

I suddenly cottoned on to what he was doing.

《牛津词典》

我开始在外面混日子，不知道自己在做些什么

I started pottering around outside, not knowing what I was doing.

《柯林斯英汉双解大词典》

她回答说：“我不是在睡觉，我醒着呢。你知道我在做什么吗？”

She answered: "I am not sleeping, I am waking. Would you know what I am making?"

youdao

And I think what we decide to do in our congregation here whether it's Christian, Muslim or Jewish, Hindu, Buddhist,whatever.

我认为我们对于在国内的集会中做什么的决定,无论是基督教，穆斯林,犹太教，印度教，佛教，不管哪种。

普林斯顿公开课 - 人性课程节选

So let's take a look down here at what I'm doing and notice here that this is perhaps more compelling; right?

让我们往下看一下我在做什么,请注意这里这个可能是更引人入胜的，对不？

哈佛公开课 - 计算机科学课程节选

So this is a place where the amortized cost actually helps me out. And as the gentleman at the back said, the question he asked is right, it depends on what I'm trying to do.

开始起了作用,我们要分析的话,我要想一想我在做什么，我抓住了每一点么？

麻省理工公开课 - 计算机科学及编程导论课程节选