"We have a moral imperative to do this. We are the greatest country that ever existed in the history of the world, the great economic leader of the developed world, but the only one that does have access to quality, affordable health care for our people, and we intend to do so,".

VOA: standard.2009.09.04

And the two categories I'm going to divide them into are declarative and imperative knowledge.

我会把它分成两类：,陈述性的知识和程序性的知识。

麻省理工公开课 - 计算机科学及编程导论课程节选

All right, this is actually a very old piece of imperative knowledge for computing square roots, it's attributed to Heron of Alexandria, although I believe that the Babylonians are suspected of knowing it beforehand.

好，这是一个很古老的,关于计算平方根的程序性知识，是亚历山大的海伦提出的，不过我怀疑在那之前,巴比伦人就已经猜想过了。

麻省理工公开课 - 计算机科学及编程导论课程节选

After the meetings, Mitchell told journalists it is imperative to achieve a full and comprehensive peace in the region to improve the lives of everyone "We believe that a full comprehensive peace represents the best way to help all of the people of the region achieve the security, the peace,and the prospect for prosperity for individual citizens that all deserve,".

VOA: standard.2009.07.27

Imperative knowledge is a description of how to deduce something.

程序性知识是,对推论过程的描述。

麻省理工公开课 - 计算机科学及编程导论课程节选

For that reason Gipp says it's imperative for United Tribes Technical College to support this preservation of the past.

VOA: standard.2010.06.22

We are ready to assist with all of this. It is imperative that it be done,"

VOA: standard.2009.05.12

At a photo session with Mr.Arias, a Nobel peace laureate tasked by the OAS with mediating the conflict, Clinton said it is imperative that Mr.Zelaya's return not lead to violence.

VOA: standard.2009.09.22

"It is absolutely imperative that America takes leadership, working with not just our Russian counterparts but countries all around the world, to reduce and ultimately eliminate the dangers that are posed by nuclear weapons,"

VOA: standard.2009.05.19

Mr.Major says it is imperative for the inquiry to determine whether Blair's cabinet knew that there were serious doubts about whether there actually were any weapons of mass destruction in the weeks and months ahead of the invasion.

VOA: standard.2010.01.02

"We discussed climate change extensively and all of us agreed that it was imperative for us to redouble our efforts in the weeks between now and the Copenhagen meeting to assure that we create a framework for progress in dealing with what is a potential ecologic disaster,"

VOA: standard.2009.11.03