retarding

[ri'tɑ:diŋ]

n. 减速, 迟滞
动词retard的现在分词形式

例句与用法：

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