布莱克-斯科尔斯模型的美妙之处在于它将期权定价问题简化为几个可观察的变量。
世界的其余部分安静得仿佛不存在。在那一刻,经过漫长的十年,Celaena看着Chaol,意识到她回家了。
The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.