人类在这一时期产生，并在劳动中逐渐进化成现代人。社会形态由原始群过渡到血缘家族，进入氏族社会。
陈列肯亚西部文化、史前史和自然史。
Exhibit the culture of the people of Western Kenya, prehistory, and natural history.
陈列肯亚西部文化、史前史和自然史。
Exhibit the culture of the people of western Kenya prehistory and natural history.
玩偶般的人物的精神联系可以追溯到日本的史前史。
The spiritual connections with doll-like figures reach well back into Japan’s prehistory.
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