Mammals do have the ability to regulate their body temperature, but not all can do it to the same degree, or even the same way.

哺乳动物确实有调节它们体温的能力，但并不是所有哺乳动物都能做到同样的程度，或甚至以同样的方式调节体温。

youdao

You're supposed to buy a ticket, but not many people do.

按说应当买票，不过买的人不多。

《牛津词典》

I don't know. Correction—I do know, but I'm not going to tell you.

我不知道。不，我知道不假，但不打算告诉你。

《牛津词典》

"Vice President Lyndon Johnson has left the hospital in Dallas, but we do not know to where he has proceeded.

VOA: special.2009.08.16

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

I'm not going to do it for you, but what would I think about doing when I change the code?

要改变代码应该做什么呢？,我不会帮你们做这些,但是我在改编代码的时候会想什么呢？

麻省理工公开课 - 计算机科学及编程导论课程节选

Management becomes ossified in their roles and employees understand that their role is not to think but to do as they are told.

FORBES: Before Asking for Change, Take a Look in the Mirror

The intention is not to theorize but to do practical work - to prepare for action on the ground, if and when the time comes for such work.

CENTERFORSECURITYPOLICY: Post-War Planning

So the challenge for me is to make sure that we do not default, but to do so in a way that is as balanced as possible and gets us at least a down payment on solving this problem.

WHITEHOUSE: President Obama Speaks to Town Hall Meeting at University of Maryland | The White House