classified grinding

例句：

1. 1. The company has classified its products into different categories.
   该公司已经将产品分类为不同的类别。
2. 2. We need to classify the data according to certain criteria.
   我们需要根据某些标准对数据进行分类。
3. 3. The classification of species is crucial in understanding evolution.
   物种的分类对于理解进化至关重要。