●on the front ˈburner (especially NAmE) (informal) (about an issue, a plan, etc.) being given a lot of attention because it is considered important
（问题、计划等）处於优先地位，处於重要地位，为当务之急◆In a recession you need to put cost-cutting on the front burner.
在经济衰退时期，你首先需要考虑削减成本。  ➡  idiom at back adj.