air quality control region

例句：

1. 1.The city has implemented strict measures to improve air quality control regions.
   该城市已实施严格措施以改善空气质量控制区域。
2. 2.The government has announced plans to expand the air quality control regions.
   政府已宣布计划扩大空气质量控制区域。
3. 3. The air quality control region is a crucial area for public health and environmental protection.
   空气质量控制区域是公共卫生和环境保护的关键区域。