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1939年,法国物理学家约里奥·居里和他的同事们正在从事原子能研究,第二次世界大战爆发了。德国法西斯发动了闪电般的攻势,
In 1939, the French physicist Joliot Curie and his colleagues were engaged in atomic energy research. The Second World War broke out. The German fascist launched a lightning offensive.