root something out/up
phrasal verb with root verb uk/ruːt/ us/ruːt/
连根挖掉，连根拔出
to remove a whole plant, including the roots, from the ground
I suggest you root out those weeds before they take hold. 我建议你把这些杂草连根拔除，等它们扎牢了根就难以除掉了。
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