1.【机】机车锅炉炉膛,燃烧室
2.盛放火警报警器的箱子
1.an enclosure for a fire in a stove, furnace, or the engine of a steam locomotive
1.Coal was also the fuel that burned in the fireboxes of the new railway engines.
煤炭还是新铁路机车炉膛里燃烧的燃料。