Explain how these two organizations utilize their internal communications systems as well as external communication systems with external organizations.
说明这两个组织是如何利用他们的内部通讯系统，以及外部通信系统与外部组织。
Explain how these two organizations utilize their internal communications systems as well as external communication systems with external organizations.
说明这两个组织是如何利用他们的内部通讯系统，以及外部通信系统与外部组织。
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