The military theory of Sunzi has been broad and profound, which contains substantial contents of military psychology.
孙子的军事思想博大精深,其中蕴涵着丰富的军事心理内容。
Since the modern times, the modern theory on history in Europe has been broad and profound, and has been characterized by the emphasis of human spirit of civilization.
近代以来,欧洲的史学理论博大精深,且有不断强调人类文明精神的特征。
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