zero in on
Meaning: If you zero in on something, you focus your attention on it.
- If you're reporting on an issue rather than an event, first get the reader interested by zeroing in the main players and their conflict.
- I like the way our lecturer zeroes in on the central issues without spending too much time on all that boring background information.
We don't have a lot of time to discuss the issue, so we'll have to zero in on