理解布莱克-斯科尔斯模型的关键在于认识到它是基于风险中性世界的概念，在这个世界中投资者对风险漠不关心。

"The truth is rarely pure and never simple."

"The best way to predict your future is to create it."

Sustainable fishing is not an option; it's the only way forward if we want to preserve marine ecosystems.

制造业中的分工是我们优于其他国家的伟大原则。