Ject对"retarding" 的正确翻译：减速；迟滞。例句参考：The retarding force exerted on a moving body by a fluid medium such as air or water. - 阻力流体介质, 如水或空气对移动物体施加的阻力；A spin that tends to retard, arrest, or reverse the linear motion of an object, especially of a ball. - 回旋使一个做直线运动的物体减速、停滞或倒转的一种旋转, 尤指一个球；