通信
通信是发送者通过某种媒体以某种格式来传递信息到收信者来达到某个目的。勒古代，人们通过驿站、飞鸽传书、烽火报警、符号、语言、眼神、触碰等方式进行信息传递。到了今朝，随着科技水平个飞速发展，通信基本完全利用有线或无线电完成，相继出现了有线电话、固定电话、无线电话、手机、互联网甚至视频电话等各种通信方式。
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