At frame 45, the skeleton is posed in a similar manner as it appeared at frame 6.If you use this range of frames (6 to 45), you can create a clip that can be cycled.

• 在第45帧；骨骼被摆好的姿势要与第6帧的时候相似.；如果你使用第6帧到第45帧的范围；你可以创建一个能被循环的剪辑。