They found that turning the air off for a set amount of time maximized nitrogen and organiccompound removal.
他们发现，在一定时间内关闭空气流通可以最大程度上减少氮和有机化合物的含量。
2
Cytosine organiccompound of the pyrimidine family often called a base consisting of a single ring containing both nitrogen and carbon atoms and an amino group.
胞嘧啶：嘧啶族的有机化合物。常被称为基，包含一个单环，内有氮原子和碳原子，还有氨群。
3
Guanine: organiccompound of the purine family often called a base consisting of two rings each containing both nitrogen and carbon atoms and an amino group.