—— 请按键盘 空白键 开始游戏 ——

数学的研究就像空气或重力——它无处不在,你看不到它,但你知道它在那里。
We must listen to the wisdom of indigenous communities who have lived in harmony with forests for centuries.
Words are the only thing that can build bridges across the abyss of misunderstanding.
创新不是偶然发生的;它需要对人和想法进行有意的投资。