—— 请按键盘 空白键 开始游戏 ——

"Time is not a line but a dimension, like the dimensions of space."
The mathematician's best work is art, a high perfect art, as daring as the most secret dreams of imagination, clear and limpid.
Don't be afraid to make mistakes. If you're not making mistakes, you're not trying hard enough.
可持续性不仅仅是一个流行词;它是负责任的采矿的基础。