—— 请按键盘 空白键 开始游戏 ——

The best way to cheer yourself up is to try to cheer somebody else up.
The boundaries which divide Life from Death are at best shadowy and vague. Who shall say where the one ends, and where the other begins?
要成为一个好的数学家,你需要既有直觉又有严谨。
The diversity of exoplanets is astonishing, ranging from gas giants to rocky worlds, some of which may harbor life.