The oxides of nitrogen can have deleterious effects on materials, vegetation, and animal and human life.

氮的氧化物对物质、植物、动物和人类生活有毒害效应。

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In the lower atmosphere the oxides of nitrogen add to an increase in ozone and small particles, which can cause respiratory ailments.

在低层大气里，氮氧化物使臭氧和可以引致呼吸道疾病的微粒增加。

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During the nights, not only were the concentrations of ozone, nitrogen oxides and other gases measured by this plane, but also, almost as an afterthought, the intensity of the light from below.

在夜晚，这架飞机不但检测臭氧、氮氧化物和其他气体的浓度，还测量了飞机下的光照强度，而这项测量差不多是后追加上的项目。

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Natural gas power emits merely 20% of the carbon monoxide of coal power, 20% of the nitrogen oxides of coal power, less than 1% of the sulfur dioxide of coal power, less than 1% of the particulate matter of coal power and less than 1% of the mercury of coal power.

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Nitrogen is separated from oxygen before combustion, thereby reducing the volume of exhaust gas and making the exhaust easier to treat by preventing the formation of polluting nitrogen oxides.

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More stringent engine standards were already set to take effect three years hence, and the EPA was now requiring at least a 90% reduction in the amount of nitrogen oxides and soot emanating from diesel engines.

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