锁眼

例句：

1. 1. The thief tried to open the safe with a keyhole.
   小偷试图用钥匙孔打开保险箱。
2. 2. The old house had several keyholes in its walls.
   这所老房子的墙上有几个钥匙孔。
3. 3. He carefully placed the key in the keyhole and turned it.
   他小心翼翼地把钥匙插进钥匙孔并转动它。