half and half nail

例句：

1. 1. She used a half andhalf nail to hang her pictures on thewall.
   她用半半钉把画挂在墙上。
2. 2. The carpenter used ahalf and half nail to hold the boardstogether.
   木匠用半半钉将木板固定在一起。
3. 3. He hammered a half andhalf nail into the wood to reinforce it.
   他用力敲打半半钉加固木头。