—— 请按键盘 空白键 开始游戏 ——

The only limits that exist are the ones you place on yourself.
如果你对我很糟糕,我会为此写一首歌。
The past is not dead; it is not even past.
Efficiency in farming must align with ecological limits—we cannot outsmart nature.
数学思想的美丽之处在于它可以跨越文化和时间被分享和理解。