nettle grub

例句：

1. 1. The nettle grubs are a common pest in the garden.
   牛蒡虫是花园中的常见害虫。
2. 2. The farmers had to destroy the crops because of the nettle grubs.
   农民不得不销毁作物，因为牛蒡虫。
3. 3. The nettle grubs were causing damage to the plants, so they needed to be controlled.
   牛蒡虫正在损害植物，所以需要控制它们。