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19 年前
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The worldwide use of means of communication such as the telephone, television, and internet is still growing rapidly. Cable companies and telecom providers are working hard to connect everyone to their networks, including people living in remote villages in the countryside. Please Hold the Line follows telecom engineers in a number of Eastern European countries during their vis...。在北朝鲜海域美国潜艇与俄国潜艇战斗的故事。
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