"Raw materials" 是材料原料的英文翻译。这个词源自英语中的 "raw"，意思是"未经加工的"，"materials" 意思是 "材料"。
例句：
The factory uses raw materials to produce their products. (工厂使用原材料生产产品。)
The cost of raw materials has increased significantly in recent years. (近年来，原材料的成本显著增加。)
The company sources its raw materials from all over the world. (公司从世界各地采购原材料。)