Primitive people often lived in caves.

原始人常常住在山洞里.

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Primitive people lived in caves and made tools from stones and animal bones.

原始人住在洞穴里并以石头和动物的骨来做工具.

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Now it looks like the primitive people were leading the lives of barbarians.

初民的生活现在看起来是相当野蛮的.

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