1. Whats the basis of this theory? �Ǹ����۵Ļ�����ʲ��?
2. Can you prove your theory to us? ����������֤�����������?
3. Can you document your theory with facts. ��������ʵ֤�����������
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n.
1. a well-substantiated explanation of some aspect of the natural world; an organized system of accepte
2. a tentative theory about the natural world; a concept that is not yet verified but that if true woul
3. a belief that can guide behavior
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