IMK

例句：

1. 1.The IMK is a key to unlocking the door.
   IMK是解锁门的钥匙。
2. 2.The IMK is responsible for managing the network.
   IMK负责管理网络。
3. 3. The IMK can be used to control access to the network.
   IMK可以用来控制对网络的访问。