hard rubber scraps

例句：

1. 1.The factory produces a lot of hard rubber scraps for the construction industry.
   这家工厂为建筑业生产大量的硬质橡胶废料。
2. 2. The recycling center collects hard rubber scraps from the streets.
   回收中心从街道上收集硬质橡胶废料。
3. 3.Hard rubber scraps are often used as raw materials in the production of new rubber products.
   硬质橡胶废料通常被用作生产新橡胶产品的原料。