—— 请按键盘 空白键 开始游戏 ——

The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.
在适宜的环境里,幼儿在工作中发展了一种技能和精确性,那是使我们十分欣慰的。
Mathematical intuition often guides the development of algorithms, but it is the rigorous proof that ensures their correctness and efficiency.