"smoke channel in a chimney," 1580s, of uncertain origin, perhaps related to Middle English flue, flewe "mouthpiece of a hunting horn" (early 15c.), which is perhaps from Old French fluie "stream;" or the modern word is perhaps from Old English flowan "to flow." Originally a small chimney in a furnace connected to the main chimney.
例文
1. The fire won 't burn because the flue is blocked up.
煙道詰まりで火が燃えない.
2.The flue has become sooted up.
煙道はすべて黒灰である。
3.If the flue overdraws,all the heat goes right up the chimney.
ダクトが過度に換気されると、煙突から直接熱が逃げてしまう。
4.Tea and flue -cured tobacco is an important cash crop.
茶葉とタバコは重要な経済作物である。
5. Flue gas desulfurization is the common method to control sulfur dioxide discharge.