—— 请按键盘 空白键 开始游戏 ——

Sustainability isn't an option; it's a responsibility we owe to future generations.
了解一个人是否值得信任的最好方法就是去信任他们。
获得朋友的唯一方法就是先成为朋友。
Small changes can lead to big impacts when everyone commits.
The arithmetic of algebraic groups is a key to understanding the Langlands conjectures.