means of classification

例句：

1. 1. The classification of species is crucialfor understanding the ecosystem.
   物种的分类对于理解生态系统至关重要。
2. 2. The researcher used variousmeans of classification to study the behavior ofanimals.
   研究者使用各种分类方法来研究动物的行为。
3. 3. The classification system is designed tocategorize different types of plants basedon their characteristics.
   这个分类系统是根据植物的特性来对它们进行分类的。