The inventor Henry Bessemer discovered that directing a blast of air at melted iron in a furnace would burn out the impurities that made the iron brittle.
發明家亨利·貝塞默發現，在熔爐裡對熔化的鐵直接吹一吹空氣，就會燒壞使鐵變脆的雜質。
They piled on great dead boughs till they had a roaring furnace, and were gladhearted once more.
他們把很多枯枝堆在一起，直到火焰熊熊燃燒，他們又高興起來了。
As long as the economy continues to blaze, it is metallurgical coal imports that will be stoking the furnace.
只要經濟繼續增長，冶金煤的進口將不斷添煤生火。
The coals were ashed in a furnace.
煤在爐子裡被燒成灰燼。