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估计几个关键参数,尤其是波动率。
This was a very short visit, but it plunged the little prince into deep dejection.
Every space has its own voice; our task is to listen.
Every seed planted is a promise to the future.
教育是可持续水产养殖实践的基础。
"Memory is the diary that we all carry about with us."
Sometimes the questions are complicated and the answers are simple.