n.（指球）回旋，倒旋，下旋...

Backspin - the effect of striking the cue ball below centre.缩杆 – 击打主球球心以下的位置后所产生的结果.Backspin: Reverse spin imparted by striking the ball with a downward movement of the racket.下旋: 向下挥动球拍击出的旋转球,使球回转....

backspin的音标：backspin的英式发音音标为：['bækspɪn]backspin的美式发音音标为：['bækˌspɪn]...