deleterious impurity

例句：

1. 1.The contamination of the water source with deleterious impurities is a serious environmental issue.
   水源受到有害杂质的污染是严重的环境问题。
2. 2. The company's decision to remove deleterious impurities from its products has raised concerns among consumers.
   公司决定从其产品中去除有害杂质，引起了消费者的担忧。
3. 3. The research team found that certain chemicals in the environment could be deleterious impurities, posing potential health risks.
   研究团队发现环境中的某些化学物质可能是有害杂质，可能对健康构成潜在风险。