在历史学界很盛行事实论证法，这是非常必要的。
The very popular in academic history factual proof law, this is very necessary.
《雪球》一书的出版，标志着历史人类学在中国有了良好的开端，扩大了人类学理论在历史学界的影响。
As a historical masterpiece of anthropology, its publication marks a good start of historical anthropology in China and expands the influence of anthropological theories in the field of history.
在自然科学领域，一个数学公式的提出必须要经过理论或实验的证明才行，而这正是历史学界所缺少的。
In natural science, a mathematical formula of proposed must undergo the theory or experiment proof to just go, and this is what is history scholars are missing.
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