And that's useful because clearly I don't need to know in advance what the answer is going to be, what that string is actually going to be.

那个是有用的，因为我不需要预先知道,那个答案将会变成什么，或者那个字符串将变成什么的时候。

哈佛公开课 - 计算机科学课程节选

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