他们发现真菌从空气中获得氮元素。

They found that the fungus was getting nitrogen from the air.

youdao

罗曼说，一旦海藻缺乏氮元素，它们终将死去，并带着氮沉入海底。

Roman says once the algae use up the nitrogen, they eventually die and sink to the bottom, taking the nitrogen with them.

youdao

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。

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

youdao

Which element is shown here? Yeah, nitrogen.

这显示的是哪个元素？对，是氮。

麻省理工公开课 - 化学原理课程节选