To extirpate weeds is not only to destroy their visible parts but also to pull them out by the roots.

根除杂草不仅仅是除去看得到的部分，而且要把他们连根拔起。

▷extirpate ['ekstɜːpeɪt]

【释义】The verb extirpate originally literally meant "to weed out by the roots." Now you'd use it when you want to get rid of something completely as if pulling it up by the root.

Use the verb extirpate when you mean to destroy completely or get rid of completely. You can try to extirpate all the bedbugs that came home with you from your vacation, but you will probably be afraid that some resisted the exterminator to munch on you later.

to  or  something 

拔除；消灭；根除

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