reject material

• 废料

reject material的用法和样例：

例句

1. There is a heap of waste material in front of the laboratory.
   实验室前面有一堆废料。
2. These methods are better than pollution control techniques that have to be applied after a waste material has become a potential pollutant.
   这些方法比在废料成为潜在污染物之后，才采用的污染控制技术更为优胜。