chinch nail

例句：

1. 1.He used a nail to hang the picture on the wall.
   他用钉子把画挂在墙上。
2. 2.The nail was so sharp that it could easily penetrate the wood.
   这个钉子太锋利了，很容易穿透木头。
3. 3. The nail was too long and had to be trimmed before it could be driven home.
   这个钉子太长了，需要修剪后才能钉入。