将一块石子拴在一根细绳上，然后使它绕着你的头部转动。
Tie a stone to a piece of string and whirl it around your head.
悬空表演者要面无表情，头部平伸，不转动。
The planker's face must remain expressionless, head held straight, not turned.
把双手举到头顶或者做一些头部绕肩膀转动的运动。
Lifting both arms above your head or rolling your head from shoulder to shoulder.
如果牠想看看两边的肩膀则需要转动牠的头部。
If it wants to look behind its shoulders, the owl needs to turn its head.
转动头部，伸展手臂。
转动头部，伸展手臂。
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