salvaged material

• 废弃物

salvaged material的用法和样例：

例句

1. The manager told us that people made little use of waste material in the past.
   经理告诉我们说过去人们很少利用废弃物。
2. Cellulosic ethanol fuel is derived from plant material often thrown away as trash.
   纤维素乙醇燃料的生产源于经常被丢弃的植物废弃物。