n.筛屑(粗筛余料；细粒)

This ladder is riddled with woodworm. 这个梯子已经让蛀虫蛀了很多洞。

The new military rulers said that the previous government had been riddled with corruption. 新的军事统治者说，前政府已经腐败透顶。

The cliffs are riddled with caves. 岩壁上布满洞穴。

The door was riddled with shots. 门被子弹打得尽是窟窿。