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要怎麼讓抄書的速度加快呢？
要如何跟遠方的親友說話呢？
本書收錄了印刷術、電報、電話、無線電、收音機、電視、人造衛星、行動電話、光纖、網際網路等10個通訊上的重大發明，一起來看看這些發明是怎麼改變歷史、改變世界的。
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