keyed advertising

例句：

1. 1.The key to the door is in my pocket.
   门的钥匙在我的口袋里。
2. 2. He locked the door and went out for a walk.
   他锁上门出去了。
3. 3. The safe was keyed to the alarm system.
   保险箱被设置成与警报系统联动。