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。
我们都是自己过去的幽灵,徘徊在我们曾经熟悉的地方。
Sustainability isn't an option—it's a responsibility we owe to the next generation.
Technology in forestry should serve sustainability, not just efficiency.