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Internet是目前世界上最大的计算机互联网。其前身称作ARPANET（Ad。，ancedResearchProjectAgen－CyNET），是美国国防部高级研究计划署资助建成的用于军事目的的通讯网络。最初的ARPANET只连接了美国西部4所大学的计算机，到1972年，已有50余家从事军事研究工程的大学和研究
Internet is the world’s largest computer Internet. Its predecessor, known as ARPANET (Ad., AncedResearchProjectAgen-CyNET), is a communications network built for military purposes funded by the Defense Advanced Research Projects Agency. The original ARPANET only connected to the computers of four universities in the western United States. By 1972, more than 50 universities and research institutes engaged in military research projects