There would be nowhere near as many people doing all sorts of other things to the planet if humans had not sped the nitrogen cycle up.

如果人类没有加速氮循环的速度，那么就远不会有众多人对地球上做其他的各种事情。

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From the middle days of the brand's life cycle up until present day, Coca-Cola has addressed a variety of environmental and health issues that speak directly to the concerns of each generation.

从品牌的生命周期的中间岁月一直到当今，可口可乐公司已经处理了许多有关环保和健康的每一代人所关心的问题。

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"We have had depressions," "We have had recessions. It is a boom and bust cycle that we are having and people are starting to get fed up with it."

VOA: standard.2009.03.29

It's not a result that's specific to the one cycle that we put up.

这不是某一个,特定热机的结果。

麻省理工公开课 - 热力学与动力学课程节选

Now what I want to do is put up a specific example of the cycle that can be undertaken inside here in an engine, and we can just calculate from what you've already seen of thermodynamics.

现在我想做的是,举一个例子,来具体说明热机内部的循环过程，同时我们可以利用热力学定律进行计算,看看热力学参量发生了什么变化。

麻省理工公开课 - 热力学与动力学课程节选

After a down cycle you typically have a booming up-cycle due to pent up demand.

FORBES: Easy Money! Fiscal Stimulus! Equals 1.3%GDP

Studies prove that this cycle ends up in you failing even worse the next time around.

FORBES: Get rid of the guilt

As the business cycle turns up, companies draw down cash and borrow to finance increasing investment.

ECONOMIST: Japan��s bond market