Keyes

例句：

1. 1. I need to use my keys to open the door.
   我需要用我的钥匙来开门。
2. 2. The old key fell out of the lock and broke.
   旧钥匙从锁里掉出来断了。
3. 3. She kept her keys in a safe place so she wouldn't lose them.
   她把钥匙放在安全的地方，以防丢失。