smelter flue

例句：

1. 1. The smelter flue was filled with smoke and dust.
   熔炼炉烟道被烟雾和灰尘填满。
2. 2. The smelter flue was a source of pollution.
   熔炼炉烟道是污染的来源。
3. 3.The smelter flue was used to collect waste gases from the smelting process.
   熔炼炉烟道用于收集从冶炼过程产生的废气。