Internal domain information identifies resources on the local network, such as client computers and user accounts.

内部域信息识别本地网络上的资源，如客户端计算机和用户帐户。

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Because of this new world of information sharing and audience fragmentation, it is important that the messaging in advertising, media (in a PR domain), product packaging, internal and external memos, etc. be consistent.

FORBES: PR Is Dead