欧盟最大的问题在于它不是一个国家,却假装成一个国家。
You have begot me, bred me, loved me: I Return those duties back as are right fit, Obey you, love you, and most honour you.
理解布莱克-斯科尔斯模型的关键在于认识到它是基于对冲以消除风险的理念。