fumes是可数名词吗

fumes是可数名词，fumes中文意思是n. 烟气（fume 的复数）

Researchers believe their lungs were seared by the toxic fumes， but orca carcasses usually sink， so no autopsy was possible.研究者们认为它们是因毒烟雾灼伤肺部，但虎鲸尸体通常沉入海底，因而没办法进行尸体解剖。