micropollution

例句：

1. 1. The city's air quality has improved significantly due to the implementation of stricter regulations.
   由于实施了更严格的规定，城市的空气质量已经显著改善。
2. 2. Micropollution is a growing concern for environmental scientists and policymakers alike.
   微污染是环境科学家和政策制定者日益关注的问题。
3. 3. The study found that micropollution can have serious health impacts on humans.
   研究发现，微污染对人类健康有严重的负面影响。