The amount of energy that can be produced anaerobically is a function of the amount of glycogen present—in all vertebrates about 0.5 percent of their muscles' wet weight.

能以无氧方式产生的能量是存在的糖原量的功能——在所有脊椎动物中，糖原量约占其肌肉湿重的0.5%。

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There is another class of lasers, however, that pulse, oscillating between an "on" stage, where light is produced, and an "off" stage, when the amount of light is dramatically reduced.

脉冲激光器是另一类的激光器，它的脉冲是在“开”与“关”两种状态的振荡之间产生。 当激光器处于“开”的状态，产生光，在“关”的状态，光量显著减少。

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They found that the amount of nitrous oxide produced in streams is related to human activities that release nitrogen into the environment, such as fertilizer use and sewage discharges.

他们发现，溪流中一氧化二氮的数量与人类活动释放到环境中的氮有关，如使用化肥和污水排放。

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The government mandates the amount that is produced in the United States each year, and the Environmental Protection Agency recently granted a waiver, allowing the percentage of ethanol that can be used in some cars to rise from 10% to 15%.

CNN: Ethanol: Is it friend or foe?

If he came here to Iowa, he might know that 20 percent of Iowa's electricity now comes from wind energy. (Applause.) Over the past 4 years, America has doubled its -- the amount of electricity that is produced from wind, and this is enough to power 13 million homes with clean and renewable energy.

WHITEHOUSE: The White House

The amount of energy produced by the lower reactor is comparable to that produced by the upper reactor.

ECONOMIST: Nuclear power