—— 请按键盘 空白键 开始游戏 ——

Opera is a way of living life to the fullest, a way of expressing emotions that cannot be expressed in any other way.
最好的领导者会赋能他人去领导。
理解布莱克-斯科尔斯模型的关键在于认识到它是基于对冲以消除风险的理念。
Technological innovation is the core driving force for the high-quality development of the petroleum industry. We must increase R&D investment and break through key core technologies.