门闩

例句：

1. 1. The door was securely fastened with a new set of locks.
   这扇门用一套新的锁锁得紧紧的。
2. 2. He tried to open the door but it wouldn't budge.
   他试图打开门，但门纹丝不动。
3. 3. The old house had several rusty old locks that needed replacing.
   那座旧房子有几个生锈的旧锁需要更换。