—— 请按键盘 空白键 开始游戏 ——

Every body continues in its state of rest, or of uniform motion in a right line, unless it is compelled to change that state by forces impressed upon it.
当他们思考我们国家的状况时,最勇敢的人可能会害怕,最聪明的人可能会颤抖。
如果量子力学没有让你深感震惊,那说明你还没有理解它。