—— 请按键盘 空白键 开始游戏 ——

数学的美在于它是一种可以以其他任何方式都无法描述宇宙的语言。
In times of crisis, true leadership is about calm, clarity, and compassion.
Censorship is never over for those who have experienced it. It is a brand on the imagination that affects the individual who has suffered it, forever.