petrochemical waste

例句：

1. 1.The petrochemical industry is responsible fora significant amount of environmental pollution.
   石化工业对环境造成了严重的污染。
2. 2. The company's waste management practicesare being scrutinizedby environmental groups.
   该公司的废物管理实践正受到环保组织的审查。
3. 3. The petrochemical waste is difficult to recycle,posing a significant threat to the environment.
   石化废物难以回收，对环境构成了严重威胁。