—— 请按键盘 空白键 开始游戏 ——

The journey of discovery is not a straight path, but a winding road filled with surprises and revelations.
The young do not know enough to be prudent, and therefore they attempt the impossible – and achieve it, generation after generation.
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。
可持续性不仅仅是一个目标,更是一种责任。
In saying that someone did something, we may be doing something ourselves.