XML并不局限于某种特定的编程语言或操作系统，因而，它可以被用作异构系统间的信息交换协议。

XML is not tied to a particular programming language or operating system, thus it can be used as a protocol for information exchange between heterogeneous systems.

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CSCW系统是一种复杂的分布式系统，涉及到网络协议、跨平台、多编程语言以及多媒体信息等多方面的复杂问题。

CSCW is a complex distributed system, involving various complicated aspects such as network protocol, multiple platforms, multiple programming languages and multimedia information management.

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