每个孩子都需要知道自己是有人爱的。

Every child needs to know that he is loved.

《牛津词典》

资讯发布将严格限制在人们需要知道的范围之内。

Information will be released strictly on a need-to-know basis.

《牛津词典》

我们需要知道犯罪是否有预谋。

We need to know whether the crime had been premeditated.

youdao

We need to know not only what are the primitives, but how do we make things meaningful in that language.

我们不仅需要知道什么是基本类型，还要知道我们在那种语言中,怎样使其变得有意义。

麻省理工公开课 - 计算机科学及编程导论课程节选

However, the thing to remember is, when you look at heats of reaction under those conditions it's all well and good.

相反，需要记住，当你需要知道反应中放出的热量时,这些量是很有用的。

麻省理工公开课 - 热力学与动力学课程节选

The very fact that I need to know it in particular is what makes me need to know it negatively.

认识一件事物需要知道,它不是什么。

耶鲁公开课 - 文学理论导论课程节选