root out
phrasal verbroot something/somebody out
- to find the person or thing that is causing a problem and remove or get rid of them
找到并去除（祸根）；根除 - We need to root out corruption at all levels.
我们需要根除各级腐败。 - The principal promised to root out the troublemakers.
校长答应铲除肇事者。
- We need to root out corruption at all levels.
- to find somebody/something after searching for a long time
终于发现（或找到）