我们的观点、外貌和性情不断变化着，但通常情况下我们的核心本质却始终如一。
Our perspectives, our appearances, our disposition can constantly change. But our core nature generally does not.
人的核心本质并不是外表的现象，不是人格的摇摇欲坠的文明的外壳部分，或是反动的形成的部分。
This nuclear essence of man is not a surface phenomenon, not part of a precariously maintained civilized crust of the personality or of a reaction formation.
首先，我运用国际经济学、管理学等工具来分析企业国际竞争力的理论来源、竞争要素、核心本质及经济指标体系。
Take advantage of professional tools like economics, management and so on, to analyze its source of theory, essential elements of competence, the corn of essence and economical index system;
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