ferret out

US /ˈfɛrɪt aʊt/
UK /ˈfɛrɪt aʊt/
"ferret out" picture
1.

查明, 搜出, 發現

to discover or find out something, especially something hidden or difficult to find

:
The detective managed to ferret out the truth after weeks of investigation.
經過數週的調查,偵探設法查明了真相。
It took a lot of effort to ferret out all the necessary information.
費了很大力氣才查出所有必要的信息。