air-mass analysis

例句：

1. 1. The air-mass analysis shows that the pollution levels in this area are relatively high.
   空气质量分析显示，该地区的污染水平相对较高。
2. 2. The air-mass analysis is crucial for understanding the health impacts of air pollution.
   空气质量分析对于理解空气污染对健康的影响至关重要。
3. 3. The air-mass analysis helps us to identify the sources of air pollution and take action to reduce it.
   空气质量分析帮助我们识别空气污染源并采取行动减少其影响。