dual classification

例句：

1. 1. The company has implemented a dual classification system to improve efficiency.
   该公司实施了双重分类系统以提高效率。
2. 2. In the field of education, there are two main types of classification: inductive and deductive.
   在教育领域，主要有两种分类方式：归纳法和演绎法。
3. 3.This dual classification system helps us better understand the data we collect.
   这种双重分类系统帮助我们更好地理解我们收集的数据。