scrap metal废金属
steel scrap钢屑,废钢料
2.He sells polycarbonate scraps from the disk making process to an automaker for tail lights.
他还把生产光盘过程中的聚碳酸酯下脚料出售给汽车制造厂,来做汽车尾灯。
4.What can businesses do with scraps, returns, broken goods, and garbage?
我们可以从废料,退货,破损货品,和废品中做些什么生意呢?