—— 请按键盘 空白键 开始游戏 ——

The more we learn about black holes, the more we realize how much we still don’t know.
These are the times that try men's souls.
当我接受自己本来的样子时,我就能改变。
Sustainability isn't an option; it's our responsibility to the next generation.
"The act of writing is an act of hope."
The interplay between discrete and continuous mathematics is where some of the most interesting problems lie.