他的工作靴底部钉满了防滑钉，以便在泥泞的地面上行走。

His work boots have ___hobnails embedded in the soles for better grip on muddy ground.

这扇古老的木门上镶嵌着铜制的圆头钉作为装饰。

The old wooden door was decorated with brass ___hobnails as embellishments.