VERB
熔煉;冶煉
To smelt a substance containing metal means to process it by heating it until it melts, so that the metal is extracted and changed chemically.
例句
Darby was looking for a way to improve iron when he hit upon the idea of smelting it with coke instead of charcoal.
達比一直在尋找改善鐵質(zhì)的方法，他猛然想到可以不用木炭熔煉，而改用焦炭。