Nature's Green Cleaner Air-dried algae (shown above) from an algal turf scrubber captured most of the nitrogen and phosphorus in the manure.

图中展示的是从藻床中取下的自然绿色海藻，海藻可以有效地分离出水源中的氮和磷，用完之后自身转化为有机肥料还可以进一步利用。

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What is worrying is that the production of reactive nitrogen is set to increase according to most predictions.

令人担忧的是，根据大多数预测所示，活性氮的生产还在呈增加趋势。

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Triton is so cold that most of its nitrogen is condensed as frost, making it the only satellite in the solar system known to have a surface made mainly of nitrogen ice.

海卫一温度极低(约为- 235摄氏度，一个大气压下- 210度左右氮气凝固——译者注)，以至其大部分的氮气都凝聚到了其表面形成霜，这使海卫一成为太阳系内唯一一颗以“氮冰”为主要地表成分的星球。

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These types of diamonds are the most chemically pure, lacking in nitrogen which therefore yield exceptional optical transparency.

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The pollutants of most concern are tiny airborne particles, "PM10s", and nitrogen dioxide.

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Nitrogen is by far the most abundant element in the Earth's atmosphere but most of it stays aloof in a form which living things can't use.

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