地址簿也看起来一样，但深入它的参数设置窗口变换很快显示出来。
Address Book also looks identical, but dig into its Preferences window and changes are soon apparent.
NAT对内网主机的出网数据包进行网络地址变换，内网主机可以使用保留地址上网，外网主机无法直接访问内网主机，从而实现单向通信。
NAT would do network address translation for outbound packet so that inside hosts can use reserved IP addresses and outside hosts can not visit inside ones directly to realize one-way communication.
地址码必须如分组密码方法那样，混淆在对TOD输入的变换过程之中。
It is necessary to mix address code in transform process of input TOD as block cryptogram.
移动IP是支持IP网络移动性的标准，当移动主机(节点)在不同的ip子网之间移动时，它通过隐藏ip地址的变换提供移动时无缝的切换。
Mobile IP is now the standard for supporting mobility in IP networks. It provides seamless mobility by hiding the change of IPaddress when a mobile host moves between IP subnets.
移动IP是支持IP网络移动性的标准，当移动主机(节点)在不同的ip子网之间移动时，它通过隐藏ip地址的变换提供移动时无缝的切换。
Mobile IP is now the standard for supporting mobility in IP networks. It provides seamless mobility by hiding the change of IPaddress when a mobile host moves between IP subnets.
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