—— 请按键盘 空白键 开始游戏 ——

The deepest insights in mathematics often come from the most abstract theories.
Truth is often stranger than fiction.
Sustainability is not a choice anymore—it's our responsibility to future generations.
采矿业的领导力意味着将安全、效率和社区长期影响置于首位。
Just the discipline of having to put your thoughts in order with somebody else is very useful thing.