—— 请按键盘 空白键 开始游戏 ——

The joy of discovery in mathematics is unparalleled.
市场瞬息万变,唯有以变应变才能立于不败之地。
The most valuable resource in the world is not oil—it's human potential.
I start early and I stay late, day after day, year after year. It took me 17 years and 114 days to become an overnight success.