fuel ash

例句：

1. 1. The factory produces a lot of fuel ash for the construction industry.
   这家工厂为建筑业生产大量的燃料灰。
2. 2.The waste ash from the furnace was collected and disposed of properly.
   炉膛的废料被收集并妥善处理。
3. 3.The company has invested in research to develop new ways to recycle fuel ash.
   该公司投资研究，开发新的回收燃料灰的方法。