The basic norm is the presupposed ultimate rule according to which the norms of this order are established and annulled, receive and lose their validity.
基本规范是预设的终极规则,根据这一规则,该秩序中的规范得以建立和废除,获得和失去其有效性。
理解布莱克-斯科尔斯模型的关键在于认识到它是基于创建无风险对冲的理念。
成为一名护士意味着陪伴人们度过他们生命中最脆弱的时刻。
Every challenge in life is an opportunity to grow and become stronger.