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父子之间要亲爱,君臣之间要有礼义,夫妇之间要挚爱但还要有内外之别,老少之间有尊卑之序,朋友之间要有诚信之德。
Exploring the topological aspects of materials is not just about understanding their current properties, but also about predicting and designing new functionalities.
绘画是一种道德行为。
林业技术应该服务于自然,而不是征服它。