nitrobacterium

例句：

1. 1. The nitrate-reducing bacteria play acrucial role in the nitrogen cycle.
   硝化细菌在氮循环中起着至关重要的作用。
2. 2. Thesebacteria are responsible for converting organic matterinto nitrogen compounds.
   这些细菌负责将有机物质转化为氮化合物。
3. 3. Nitrobacteriumis a type of bacteria that can survivein extreme environments.
   硝化杆菌是一种能在极端环境中生存的细菌。