—— 请按键盘 空白键 开始游戏 ——

煤炭的未来在于更清洁的技术和更智能的资源管理。
We are what we pretend to be, so we must be careful about what we pretend to be.
When I sing, I hope to convey positive energy.
The only performance standard is 'Zero Defects'.
"Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding."
仓库里没有积蓄备用的粮食,一旦遇到饥荒之年,就很难应付了。