lock lay-bay

例句：

1. 1. The door is locked from the inside.
   门从里面上锁了。
2. 2. He locked the door securely before leaving.
   他离开前把门锁得牢牢的。
3. 3. The safe is a good place to keep your valuables.
   保险箱是个好地方保管你的贵重物品。