—— 请按键盘 空白键 开始游戏 ——

The past is always with us, for it feeds the present.
Patience and persistence are the keys to unlocking the mysteries of mathematics.
能源危机是一个可以解决的问题——如果我们现在行动的话。
It’s funny. The things that are most important to you are often the hardest to talk about.