Communications satellite helps the human a lot in many ways.

通讯卫星在很多方面对人类有很大的帮助。

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The history of information communications is as long as that of human beings.

信息传播的历史和人类一样久远。

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The history of information communications is as long as that of human beings.

信息传播的历史和人类一样久远。

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