on the front burner
US /ɑn ðə frʌnt ˈbɜrnər/
UK /ɑn ðə frʌnt ˈbɜrnər/

1.
是当务之急, 优先处理
being dealt with or considered as a matter of high priority
:
•
The new project is on the front burner, so we need to focus all our efforts on it.
新项目是当务之急,所以我们需要把所有精力都集中在上面。
•
We have several issues on the front burner that need immediate attention.
我们有几个问题是当务之急,需要立即关注。