pyrrolic nitrogen compound的用法和样例：
例句
- Ammonium is toxic and is converted to organic nitrogen compounds in the root.
铵有毒，在植物根部被转化为有机含氮化合物。 - The hyphal walls of most species of fungi differ from those of plants in being composed of microfibrils of a nitrogenous compound called chitin or a form of fungal cellulose.
很多真菌的菌丝壁与其他植物不同，是由被称做几丁质或菌质纤维素含氮化合物构成的微纤维所组成。
