narrow down

US /ˈnær.oʊ daʊn/
UK /ˈnær.oʊ daʊn/
"narrow down" picture
1.

réduire, restreindre

to reduce the number of possibilities or choices

:
We need to narrow down the list of candidates to three.
Nous devons réduire la liste des candidats à trois.
The police are trying to narrow down the suspects.
La police essaie de réduire le nombre de suspects.