Security issue of multicast technology is totally different from that of unicast.
多播在安全性方面与普通的单播有着显著的不同。
Multicast is a new technology with high efficiency for network transport.
组播技术是一种新的、高效的网络传输机制。
Multicast is a technology that one send data and several receive data.
组播是一人发送多人接收的技术，但它是不可靠的。
Multicast has become an indispensable technology of the next generation of Internet.
可以说，组播已经成为新一代网络不可缺少的关键技术。
Multicast has become an indispensable technology of the next generation of Internet.
可以说，组播已经成为新一代网络不可缺少的关键技术。
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