fork pin

例句：

1. 1. She used a fork to pick up the food on her plate.
   她用叉子夹起盘子上的饭菜。
2. 2. He put the pin in the wall to hang his picture.
   他把钉子钉在墙上挂他的画。
3. 3. The pin was too small to open the lock.
   这个针太小了，打不开锁。