1. Pull forward, breathe forward, land forward and kick forward. 向前划水，向前呼吸，向前入水，向前踢腿。
2. Then cloud motion winds are derived from these tracers and after a circumfluence analysis on the cloud motion winds, the cloud motion winds are compared with the rawinsonde winds. 对用该方法选取的示踪云进行云迹风反演，然后对反演出的云迹风进行环流分析，并与探空风进行比较。
3. Contouring motion control is one of the important topics in motion control research, which has been widely applied in motion control tasks in manufacturing and other automation systems. 轮廓运动控制是运动控制领域研究的重要课题之一，其广泛应用于精密机械加工与其它自动化运动控制系统中。
4. The best method of treating motion is to consider motion of the center of mass and motion about the center of mass, as we shall see in future chapter. 研究运动的最好的方法就是研究质量中心运动和绕质量中心的转动，在以下各章里我们将了解到这一点。
5. According to Newton's first law of motion a body is in motion but actually never is there a body which remain in motion forever because it is impossible to get rid of external influence. 根据牛一定律，运动的物体会一直运动，但实际上决不会有永远保持运动的物体，因为它不可能摆脱外部作用力的影响。
