The lunar soil (regolith) contains iron, aluminum, calcium, silicon, titanium, and oxygen, as well as trace amounts of lighter elements such as carbon, sulfur, and nitrogen.

月球的土壤(风化层)含有铁、铝、钙、硅、钛和氧等元素，此外还发现有大量较轻元素如碳、硫和氮等。

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The atmosphere is roughly 78 percent nitrogen, 21 percent oxygen, with trace amounts of water, argon, carbon dioxide and other gases.

地球大气含有大约78%的氮气、21%的氧气和痕量的水蒸气、氩气和二氧化碳等其它气体。

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More immediately, fertilizers used in farming have injected vast amounts of nitrogen and phosphorus into regional environments.

比较直观的是，用于耕地的化肥输入大量的氮元素和磷元素到环境当中。

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Rather than rotating corn planting with soybeans to replace soil nitrogen, many farmers are planting corn year after year and adding large amounts of nitrogen fertilizer.

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Managers said the special rooms will have small amounts of nitrogen piped into them to reduce the oxygen content in the air, so fires cannot start.

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Today's diesel and natural gas engines emit similar amounts of sulfur, nitrogen and particulates, he said.

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