Notifier makes it possible to uncouple senders and receivers of messages. 事件通知可以区分消息的发送者和接收者。
The clutch is located in the power train between the engine and the transmission. Its purpose is to permit the driver to couple or uncouple the engine and transmission. 在传动系统中,离合器位于发动机与变速器之间,其作用是使驾驶员可以把发动机与变速器接合或脱离。
