我不知道他是同性恋者。

I didn't know he was gay.

《牛津词典》

“我之前不知道米兰是那么棒，”他感叹道。

"I'd no idea Milan was so wonderful," he raved.

《柯林斯英汉双解大词典》

我不知道他是怎么进入伊拉克的。

I have no idea how he got into Iraq.

《柯林斯英汉双解大词典》

Now I take it the dissertation can be read without knowing that, and the science is fine.

我认为我们在读他的论文是,在不知道他信仰时，他研究的科学并无不妥。

普林斯顿公开课 - 人性课程节选

He knew things that I don't know, he has a genius for formulating theories, and helping people make discoveries, that I can't do in science.

他知道我所不知道的事情，他是创造理论的天才，帮助别人做探究，这些我在科学领域做不到。

麻省理工公开课 - 电影哲学课程节选

I don't need a prime minister.' I knew what he meant by that.

我不需要一个首相”,我知道他是什么意思。

普林斯顿公开课 - 国际座谈会课程节选