ammonia-air fuel cell

例句：

1. 1.The new ammonia-air fuel cell technology has greatly improved the efficiency of power generation.
   新的氨气空气燃料电池技术大大提高了发电效率。
2. 2. The ammonia-air fuel cell is a promising alternative energy source for transportation.
   氨气空气燃料电池是交通运输领域的一种有前景的替代能源。
3. 3.In recent years, researchers have been working on developing more efficient and cost-effective ammonia-air fuel cells.
   近年来，研究人员一直在努力开发更高效、成本更低的氨气空气燃料电池。