文字是人类进入文明时代的标志。
中原地区文明的起源是相当早的，在龙山时代晚期，中原地区已进入文明时代。
At the period of the later Longshan culture, the Central Plains area had entered civilization.
研究表明，中国古代北方草原游牧民族进入文明时代的时间较以前认定的时间提前了整整一代人。
It is verified that the time of ancient prairie nomad in North China coming into civilization is put forward to a whole generation before.
传播是人类的活动，它有悠久的历史，推动人类由动物世界进入人类世界，由野蛮时代进入文明时代。
The dissemination is the mankind's activity, it has a long history, pushing the mankind to enter the mankind from the animal world society, enter the civilization ages from savage ages.
中国在夏朝时开始进入了文明时代，创造了辉煌的科技和文化。
After entering the era of civilization in the Xia Dynasty, China created glorious science and culture.
中国在夏朝时入手下手进入了文明时代，创造了辉煌的科技和文化。
Afterentering the era of civilization in the Xia Dynasty, China created glorious science and culture.
中国在夏朝时入手下手进入了文明时代，创造了辉煌的科技和文化。
Afterentering the era of civilization in the Xia Dynasty, China created glorious science and culture.
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