environmental pollution in coal mine

例句：

1. 1. The factory's wastewater discharge is a major source of environmental pollution.
   这家工厂的废水排放是主要的环境污染源。
2. 2. Environmental contamination has become a global concern due to the increase in oil spills.
   由于油轮事故的增加，环境污染已成为全球关注的问题。
3. 3. The government has launched a campaign to reduce environmental pollution and promote sustainable development.
   政府已经发起了一项运动，以减少环境污染并促进可持续发展。