classifcation of investment

例句：

1. 1. The scientists classified the new species into different groups.
   科学家们将新物种分成不同的组。
2. 2. The company's product classification system is very user-friendly.
   公司的产品线分类系统非常用户友好。
3. 3.The researchers have conducted a thorough classification of the data.
   研究人员对数据进行了彻底的分类。