—— 请按键盘 空白键 开始游戏 ——

"Books are the most precious gifts we can give to a child."
In the world of mathematics, every question leads to another, creating an endless web of knowledge that connects all areas of science.
Materials have memory; they carry time and stories.
我对生态系统作为一种智能形式的想法感兴趣。
The most dangerous myth in fishing is that there will always be more fish.