fly ash monitor

例句：

1. 1. The flying ash monitor system is designed to detect and prevent air pollution in urban areas.
   飞行中的灰烬监测系统旨在检测和预防城市地区的空气污染。
2. 2. The engineers used the flying ash monitor to identify the source of the contamination.
   工程师们使用飞行中的灰烬监测器来识别污染源。
3. 3. The flying ash monitor helped us understand the impact of industrial activities on the environment.
   飞行中的灰烬监测器帮助我们了解工业活动对环境的影响。