pin down

US /pɪn daʊn/
UK /pɪn daʊn/
"pin down" picture
1.

menentukan, memastikan

to understand or describe something exactly

:
It's hard to pin down the exact cause of the problem.
Sukar untuk menentukan punca sebenar masalah itu.
I can't quite pin down what's bothering me.
Saya tidak dapat menentukan apa yang mengganggu saya.
2.

menahan, memaksa tinggal

to make someone stay in a particular place or prevent them from moving

:
The police managed to pin down the suspect in the alley.
Polis berjaya menahan suspek di lorong itu.
The heavy rain pinned us down in the cabin for hours.
Hujan lebat menahan kami di dalam kabin selama berjam-jam.