1. Scientists often cannot date precisely archeological or prehistorical findings. ��ѧ���dz������ܾ�ȷ�ؼ������Ż�ʷǰ�ڷ��ֵ����ڡ�
2. In 2008, 10, 000 B. C, where there are a lot of prehistorical animals, will be to your taste. ����2008�꣬�ⲿ���ڶ�ʷǰ��������ġ���Ԫǰ10000�꡷һ�������Ŀ�ζ��
3. I assume that you could read simplify chinese. Personally, I am not going explore that prehistorical monster who eats men like snack. �Ҳ����ܶ���һЩ�����ġ����Ҹ���������������û��Ȥ�о���������˵����ijԵ�ʷǰ���
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adj.
1. belonging to or existing in times before recorded history
