But climate change skeptics say the credibility of the U.N.body has been damaged by the blunder, which media reports have termed "Climategate."

VOA: standard.2010.01.23

So, if we took the case of nitrogen, if we add an electron to nitrogen and go to n minus, we find that the change in energy is 7 kilojoules per mole.

如果我们以氮为例，如果我们给氮增加个电子令它变成-1价的氮，我们会发现能量的变化是，7，千焦每摩尔。

麻省理工公开课 - 化学原理课程节选

So, there are 2 different things that we can compare when we're comparing graphs of radial probability distribution, and the first thing we can do is think about well, how does the radius change, or the most probable radius change when we're increasing n, when we're increasing the principle quantum number here?

当比较这些径向概率分布图,的时候，我们可以比较两个东西，第一个就是考虑当我们增加ｎ,当我们增加主量子数的时候，半径怎么变，最可能半径怎么变化？

麻省理工公开课 - 化学原理课程节选

The U.N.climate change talks opened Monday with warnings that time was running out on reaching a deal.

VOA: standard.2009.09.28

OK. What does that say? I'm going to change MinIndex min index to also point there n value is 8, j starts off here, and I say, OK, is the thing I'm looking at here smaller than that? Yes.

好的，这意味着什么？,我打算交换，让它也指向那里，MinVal是8，j从这里开始,我要找的值比这个小么？是的。

麻省理工公开课 - 计算机科学及编程导论课程节选

While in New York, Mr.Obama also addressed a high-level summit on climate change,called by U.N.Secretary-General Ban Ki-moon.

VOA: standard.2009.09.22

And in London, the U.N.Secretary General said world leaders are not likely to agree to a new climate change pact at the December summit in Copenhagen.

VOA: standard.2009.11.04

As the skit continues, the teacher has a change of heart after another student recites their rights according to the U.N.Convention and according to the students themselves.

VOA: standard.2009.11.22

But now executive secretary of the U.N.Framework Convention on Climate Change Yvo de Boer says any decision taken next month in Copenhagen will instead be "morally binding."

VOA: standard.2009.11.06

(Test) The U.N.Secretary-General says he is "optimistic" a climate-change agreement can be reached in Copenhagen that will include specific recommendations on key elements that will take effect immediately.

VOA: standard.2009.12.09

Yvo de Boer,the U.N.'s top climate change official, told delegates there was still time to break deadlocks, but he said countries that could be more ambitious should act now.

VOA: standard.2009.09.28

The alarming prediction that the Himalayan glaciers are receding faster than those in any part of the world was made in a 2007 report by the U.N.'s Intergovernmental Panel on Climate Change.

VOA: standard.2010.01.23

In addition to the non-proliferation summit, Rice confirmed that President Obama will address the opening session of a climate change summit to be convened by U.N.Secretary General Ban Ki-moon on September 22.

VOA: standard.2009.09.02