—— 请按键盘 空白键 开始游戏 ——

A mind needs books like a sword needs a whetstone.
可持续林业不是一种选择;它是一种义务。
最好的建筑是看不见的;重要的是其中的生活。
如果你愿意,我们可以回到那个山洞。
The concept of 'loss aversion' plays a critical role in decision-making, where the pain of losing is psychologically twice as powerful as the pleasure of gaining.