multi-fuel fired boiler

例句：

1. 1. This new model of multi-fuel fired boiler is more energy-efficient than the previous one.
   这款新型多燃料燃烧锅炉比之前的更节能。
2. 2.The engineers are working on a new design for the multi-fuel fired boiler to improve efficiency.
   工程师们正在为多燃料燃烧锅炉设计一个新的改进方案，以提高效率。
3. 3. The company has invested heavily in research and development for its multi-fuel fired boiler technology.
   该公司在多燃料燃烧锅炉技术的研发上投入了大量资金。