narrow down
US /ˈnær.oʊ daʊn/
UK /ˈnær.oʊ daʊn/

1.
mengecilkan, mengurangkan
to reduce the number of possibilities or choices
:
•
We need to narrow down the list of candidates to three.
Kita perlu mengecilkan senarai calon kepada tiga.
•
The police are trying to narrow down the suspects.
Polis sedang cuba mengecilkan senarai suspek.