—— 请按键盘 空白键 开始游戏 ——

By the help of microscopes, there is nothing so small as to escape our inquiry; hence there is a new visible world discovered to the understanding.
The magic of cinema is in its ability to connect us all.
The biggest challenge isn't the science - it's changing people's perceptions.
两个物体的相互作用力总是大小相等,方向相反,同时出现或消失且作用于同一直线上。
如果你不知道,意见有什么用呢?