deflecting couple

例句：

1. 1. The deflection of the light beam by the mirror caused a slight shift in the image.
   镜子使光束偏转，导致图像轻微偏移。
2. 2. The deflecting couple was responsible for the movement of the vehicle.
   偏转对偶负责车辆的移动。
3. 3. The deflection of the wind caused the leaves to sway.
   风的偏转使树叶摇摆。