a turbulent, fast-moving, and destructive cloud of extremely hot gas and volcanic ash ejected during an eruption

火山喷发时产生的火烧云瞬间席卷了山下的村庄。

brightly colored clouds, typically red or orange, that appear in the sky at sunrise or sunset

傍晚时分，天边出现了大片红彤彤的火烧云。