From steel mills to paper factories, industry eats up about a third of the world's energy.

从钢铁厂到造纸厂，工业消耗了世界约三分之一的能源。

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Third, to actively develop energy cooperation and enrich connotation of bilateral relations.

第三，积极开展能源合作，充实两国关系内涵。

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Third, promote energy cooperation.

三是推动能源合作。

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And let's look at the final kinetic energy that we'd observe in this spectrum, which is 384 electron volts, so what is that third corresponding ionization energy?

然后让我们来看一下,在光谱中观测到的，最后一种动能，它大小是，384，电子伏，那么这相应的第三种电离能是多大？

麻省理工公开课 - 化学原理课程节选

We call these first, second, third ionization energies in sequence. This is the first ionization energy.

我们按照顺序把这些叫做一级，二级,三级电离能，这是初级电离能。

麻省理工公开课 - 固态化学导论课程节选

So, let's think about kind of differentiating, however, between first ionization energy or just ionization energy, and other types such as second or third ionization energy, and let's take boron as an example here.

那么，让我们来区分一下第一电离能，也就是电离能与其他类型的电离能，比如第二，第三电离能，我们以硼为例。

麻省理工公开课 - 化学原理课程节选

In China, wind energy has surpassed nuclear power to become the third largest energy source in the country.

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During the LEED certification process, it was estimated that the building would use approximately one-third less energy than comparable buildings.

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The balancing figure is that everyone will be using one third less energy (and 5% less natural gas) than they do now.

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