the part of a cooker, etc. that produces a flame 煤气头；煤气灶火圈；炉膛 
a large, solid metal piece of equipment for burning wood or coal, used for heating a room （取暖用的）炉子 a wood burner 烧木柴的炉子
see also Bunsen burner
Idioms
on the back burner
- (informal)
(of an idea, a plan, etc. 主意、计划等 left for the present time, to be done or considered later 暂时搁置
on the front burner
- (informal, especially North American English)
(of an issue, a plan, etc. 问题、计划等 being given a lot of attention because it is considered important 处于前列重要地位；受到重视；为当务之急