You need to keep a good grip on reality in this job.

做这个工作你需要充分了解实际情况。

《牛津词典》

When you're wearing a loud polka dot clothes, you need to keep the rest of your outfit quiet.

当你穿着花哨的圆点纹衣服时，你需要确保你身上的其它衣服是朴素些的。

youdao

Do you need to keep these letters or shall we bin them?

你需要保存这些信件吗，还是干脆把它们扔掉？

《牛津词典》

It's kind of ironic that we put this in the same lecture as we talk about atomic radii, which we also call r, but they're two different r's, so you need to keep them separated in terms of what you're talking about.

有点讽刺的是,我们在同一堂课里还讨论过了原子半径，它也是用，r，表示的，但是它们具有不同的意义，因此大家需要注意区分它们,弄清楚我们讨论的是哪一个。

麻省理工公开课 - 化学原理课程节选

Before I do that though, let me try and give you an analogy to keep this in mind of why we want to basically build these abstractions and what we need in order to have them work together.

在我们看例子之前请让我打个比方,以便你们能记住我们,为什么要建立这些抽象,以及要使它们协调工作,我们需要做些什么。

麻省理工公开课 - 计算机科学及编程导论课程节选

But you actually need to keep a few caveats in mind as you do this, which is the fact that trends predict a lot of chemical properties, but they can't predict everything in terms of biological properties.

不过在你使用的过程中,需要牢记一些注意事项,那就是元素周期律可以预言很多化学性质，但是不能预言一切性质,比如生物学性质。

麻省理工公开课 - 化学原理课程节选

The big picture is what you need to keep in mind, not the compartmentalization.

CNN: Transcript: White House Deputy Counsel Mills' statement

To score success you need to keep showing your best tennis, which I'm trying to do in every match.

CNN: Kirilenko knocks Radwanska out of Kremlin Cup

How large a spread do you need to keep the taxman at bay?

FORBES: Investment Strategies