Witchweed is very difficult to remove after it invades an area .

独脚金侵袭一个地区后，很难将它移除。

Striga is a parasitic weed that africans commonly call witchweed .

striga是一种寄生野草，非洲人通常称其为独脚金。

Witchweed has another unusual quality .

独脚金有另一项不同寻常的特性。

Witchweed is very difficult to remove after it in weeds ( invades ) and area .

在独脚金入侵领域后，独脚金非常难以移走。

Now , scientists say they have produced seeds that can protect sorghum crops from witchweed .

目前，科学家表示他们已经生产出可以保护高粱免受独脚金危害的种子。