这是一段关于计算机网络的,希望不要用软件翻译!谢谢!
A metropolitan area network,or MAN(plural:MANs,not MEN) is basically a bigger version of a LAN and normall uses similar technology.It might cover a group of nearby corporate offices or a city and might be either private or public.A MAN can support both data and voice,and might even be related to the local cable television network.
MAN is designed to extend over an entire city.It may be a single network such as a cable television network,or it may be a means of connecting a number of LANs into a larger network so that resources may be shared LAN-to-LAN as well as device-to-device. For example, a company can use a MAN to connect the LANs in all of its offices throughout a city.