—— 请按键盘 空白键 开始游戏 ——

我们不必如此努力。
The truth is, I don't know where my ideas come from. What I do know is that they come when I'm not trying to think of them.
粒子的概念只是一种近似,仅在特定极限情况下有效。
You can’t change the past, but you can shape the future.