heat loss due to unburned carbon

例句：

1. 1. Thefirefighters were able to save thehouse from being completely destroyed.
   消防员们成功地将这所房子从完全摧毁中拯救出来。
2. 2. The unburned carbonin the air is a major contributor to global warming.
   空气中未燃烧的碳是全球变暖的主要贡献者。
3. 3.The scientist found that the unburnedcarbon particles could be used as a fuelsource.
   科学家发现，未燃烧的碳颗粒可以作为燃料来源。