The company's output of iron ore, as well as copper, zinc and nickel, surged in the last three months of 2009 because of strong demand from Chinese carmakers and construction companies.

VOA: standard.2010.01.21

And if I do that then I can find out the change in enthalpy of this reaction. It's just going to be the heat of formation of these three moles of water, minus the heat of formation of the iron oxide. OK.

我就能得到这个,反应的焓的变化,它就是三摩尔水,的生成热，减去氧化铁的,生成热，好。

麻省理工公开课 - 热力学与动力学课程节选

I've given you the periods at the top of the chart: early Bronze Age; middle Bronze Age from about 2100 to 1550; we date the late Bronze age from about 1550 until 1200--the introduction of iron and the beginning of the Iron Age in 1200. Prior to that, the Bronze Age, which is divided into these three periods.

我在这个表格的顶端给你们列了一些时期：,早期青铜时代；中期青铜时代，从约公元前2100年到前1550年；,晚期青铜时代，从公元前1550年到前1200年，即铁器时代前页；,然后公元前1200年开始了铁器时代，在那以前，青铜时代分为那样三个时期。

耶鲁公开课 - 旧约导论课程节选