1·Multicasting is the ability to create a virtual network of computers that can communicate directly with every other member at the same time.
多点传送是创建虚拟计算机网络的一种能力，该虚拟网络中的每台计算机都能同时直接与其他每个成员通信。
1·It implements the Messenger interface and forwards any messages it receives to all registered Messengers — sort of like multicasting AWT events.
它实现了Messenger接口，并且将收到的任何消息转发给所有注册过的Messenger—有点象多点广播AWT事件。