biological pollution

例句：

1. 1.The city's water system is severely affected by biological pollution.
   城市的水系统严重受到生物污染的影响。
2. 2.Biological pollution poses a significant threat to marine life.
   生物污染对海洋生物构成重大威胁。
3. 3. To combat this issue, we need to implement stricter regulations on waste disposal and biodegradable materials.
   为了解决这个问题，我们需要实施更严格的废物处理和可降解材料规定。