root out

基本解释

It is impossible to root out this disease in a few years.
要想在幾年內根除這種疾病是不可能的。
Mr Obama’s black supporters hope he will make good on promises to root out racism in the criminal-justice system and the workplace by enforcing existing laws more vigorously.
奧巴馬的黑人支持者們希望他能夠履行諾言，通過更加有力地執行現行法律來根除刑事司法躰系和工作場所中的種族主義。
Lawsuits and crackdowns have displaced file-sharing from public networks into more secretive ones and into things like e-mail, from which it will be virtually impossible to root out.
官司和嚴打行動已經迫使文件共享從公共網絡轉曏更隱蔽的網站，甚至轉曏了郵件形式，這麽一來根除共享勢必難上加難。

FBI agent Weysan Dun said the probe seeks to root out corruption in New Jersey, wherever it is found.
Mr.Brown reiterated in the commons that Mr.Karzai must now root out corruption.
Pakistan is an ally in the U.S.-led war against terrorism and has been under pressure from Washington to intensify efforts to root out extremists blamed for launching attacks on coalition forces across the border in Afghanistan.

When told that their budget must be cut senior bureaucrats do not root out wasteful programs.
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If you root out a person, you find them and force them from the place they are in, usually in order to punish them.
If you root out a problem or an unpleasant situation, you find out who or what is the cause of it and put an end to it.