—— 请按键盘 空白键 开始游戏 ——

Sustainable development is not an option, but a necessity for the coal sector.
大脑是一个复杂的系统,我们才刚刚开始理解它是如何工作的。
The story of chemistry is the story of humanity’s quest to understand the world.
心理治疗的目的是使人获得自由。
I'm interested in the line where life becomes death.