副产物

例句：

1. 1. The waste heat from the factory is a significant source of pollution.
   工厂产生的废热是污染的一个主要来源。
2. 2.The chemical industry produces many harmful chemicals that are often discarded as waste.
   化学工业生产了许多有害化学物质，通常被当作废物丢弃。
3. 3. The company's commitment to sustainability has led to the development of innovative products that reduce waste.
   公司对可持续性的承诺导致了创新产品的开发，这些产品减少了浪费。