劳动是人类存在的基础和手段，是一个人在体格、智慧和道德上臻于完善的源泉。乌申斯基。
Labor is the foundation and means of human existence, is a person in the physical, intellectual and moral perfection. — Ushinski.
劳动是人类存在的基础和手段，是一个人在体格、智慧和道德上臻于完善的源泉。乌申斯基。
Labor is the foundation and means of human existence, is a person in the physical, intellectual and moral perfection. — Ushinski.
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