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。
教育是富有时的饰品,穷乏时的避难所。
The dairy industry must balance tradition with progress to meet modern demands.
Life is short, but wisdom is eternal.
The saddest aspect of life right now is that science gathers knowledge faster than society gathers wisdom.
历史会证明谁真正为人民服务。
"Happiness is not something ready made. It comes from your own actions."