on the case
01
used to refer to a situation in which one is taking legal action to solve a problem or crime
أمثلة
The police are on the case and should find the thief soon.
02
used when a specific task or a particular situation is being dealt with
تعبير اصطلاحي
أمثلة
Management is on the case now, and it looks as if things will return to normal soon.
