rotation相关的词根或词缀是: rot

复数： rotations

Cloud rotation is usually quite weak .

云的旋转通常相当微弱。

Rotation was always slow and sloppy .

旋转是总是缓慢而拖泥带水。

Make sure that trackball rotation is active in your camera advanced opengl menu .

确保高级opengl菜单中的球形旋转选项是被激活的。

So , as the earth orbits , its axis of rotation stays constant .

所以，当地球绕太阳环形时，地球的旋转轴是恒定的。

But irregularities in the rotation of the earth made that unreliable .

但是地球自转的不规律使得这个数值不可靠。