—— 请按键盘 空白键 开始游戏 ——

物体的加速度与所受的合外力成正比,与物体的质量成反比。加速度的方向与合力的方向相同。
The alternation of motion is ever proportional to the motive force impressed; and is made in the direction of the right line in which that force is impressed.
The true cost of overfishing is measured in empty nets and broken communities.
The secret of living is to own a convertible and a lake...If the sun is shining, you can rid around in your convertible and be happy...If it starts to rain, it won't spoil your day because you can just say, 'Oh, well, the rain will fill up my lake!'"”
I don't want to be remembered; I want to be felt.
Sustainability is no longer an option; it's a business imperative.