大多数我所访谈的历史学家，包括英、美、德和日的学者，都一致同意二战的转折点在东线的苏联战役。

The majority of the historians I talked to—including American, British, German, and Japanese academics—agreed that the turning point of the war was to be found within the conflict in the Soviet Union.

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这些历史学家研究的英、德、俄和美国的物理学家有什么不同，在每种情况下又是如何影响到他们所做的？

What are some differences between the cases of British, German, Russian, and American physicists that these historians have studied, and how has this affected the physics done in each case?

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