—— 请按键盘 空白键 开始游戏 ——

The concept of reducibility is central to understanding the relationships between different computational problems.
To live is not to breathe, but to act.
Those who are willing to give up freedom for security will eventually lose both.
一个人的幼儿时期,其实就是一种不断习得能力的过程,这个周期性的刺激,将带给儿童无限的欢乐和乐趣。
"We are all broken, that's how the light gets in."