1. 〔すす〕soot;〔煙〕smoke
    • 空が煤煙で黒くなった
    • The sky became dark [black] with soot and smoke.
    • 煤煙で汚れた建物
    • a smoke-blackened building
    • 煤煙の多い[少ない]燃料
    • smoky [smokeless] fuel