to squeeze; to wring out
to narrow down; to refine
候補を三つに絞り込んだ。
I narrowed the candidates down to three.
検索条件を絞り込んで結果を探した。
I narrowed the search criteria and looked for results.
原因をさらに絞り込む調査が必要だ。
Further investigation is needed to narrow down the cause.