大头钉

例句：

1. 1. He used a big head pin to hold his hat on.
   他用一个大头针把帽子别住。
2. 2. The teacher asked the students to use their hands as fasteners.
   老师要求学生们用手作为固定工具。
3. 3. She carefully placed the large staple in the center of the tablecloth.
   她小心翼翼地将大头钉放在桌布的中心。