类定义

例句：

1. 1.They classified the data according to its importance.
   他们根据数据的重要性对其进行了分类。
2. 2. The scientists classified the species based on their physical characteristics.
   科学家们根据物种的物理特性进行了分类。
3. 3.The museum has a collection of rare artifacts that can be classified as historical relics.
   博物馆收藏了一些罕见的文物，可以归类为历史遗迹。