—— 请按键盘 空白键 开始游戏 ——

True progress in farming means leaving the land better than we found it.
The language of mathematics is the language of the universe, and by learning it, we can understand the cosmos.
Marine conservation is not a sacrifice—it’s an investment in our survival.
分布式系统是指一个系统中,即使是你不知道存在的计算机发生故障,也可能导致你自己的计算机无法使用。