narrow down; nod through; nose out

narrow * down +
使 (可能性或選擇範圍) 減少
I am not sure which university to apply to, but I have narrowed my list down to three.

nod * through +
(法律、法案、規定等) 未經認真考慮或辯論就通過;(法律、法案、規定等) 輕易地通過
Parliament nodded the bill through.

nose * out +
發現 (資訊、秘密等)
He nosed out their plans.

nose * out +
險勝 (某人)
The other candidate nosed him out by a few votes.