我需要这样，因为，我害怕。

I needed to because I was so afraid.

youdao

我需要这样做！

I want to do this!

youdao

汤姆：我需要这样做吗？

Tom: Shall I do that?

youdao

All right, so I'm burning some energy, I'm burning some fuel to do this somehow, to get that work to happen.

而这个路径需要先加热再冷却，这样，我需要能量来源，比如燃料，来完成做功。

麻省理工公开课 - 热力学与动力学课程节选

This is a sign of my economic status: I don't have to work. It is middle and lower-class women who do not get to observe purdah in this way.

但这恰好是我经济地位的标志：,我不需要工作，只有中下阶层的女人,才像这样不遵守深闺的习俗。

普林斯顿公开课 - 人性课程节选

I need to have a float. I need to have another float here, it's giving me some information.

这儿还需要一个,它给了我这样的信息。

麻省理工公开课 - 计算机科学及编程导论课程节选