haze factor

例句：

1. 1. The city's air quality has been severely affected by the recent increase in haze factor.
   该市的空气质量因近期雾霾指数的升高而严重受影响。
2. 2.The study found that the haze factor was a significant contributor to the pollution levels.
   研究发现，雾霾因子是导致污染水平显著增加的重要因素。
3. 3. To combat the haze factor, the government has implemented stricter regulations on vehicle emissions.
   为了对抗雾霾因子，政府对车辆排放实施了更严格的规定。