When you are ready, try to swing smoothly and slowly, like slow motion, focusing on programming your muscles. 当你准备好了，试著平稳地而且慢慢地挥拍，像慢速运动，聚焦在规画你的肌肉。
In the slow speed motion approximation, we have obtained the equations of motion for two spherically-symmetric,non rotating bodies with the radiative force. 在本文中我们得到了慢速运动中两个球对称非旋转天体在辐射作用力影响下的运动方程。
