1N-COUNT 火炉;熔炉 A furnace is a container or enclosed space in which a very hot fire is made, for example to melt metal, burn rubbish, or produce steam. 火炉;熔炉
2N-SING 火炉般的地方;极闷热的地方 If you say that a place is afurnace, you mean that it is very hot there. 火炉般的地方;极闷热的地方 [informal, emphasis]