使用方法：背靠器材，双手握紧护栏，缓慢向后弯曲身体。

Use Method: Lean backwards against the equipment, holding the side bars firmly for support.

youdao

使用方法：背靠器材，双手握紧护栏，缓慢向后弯曲身体。

Use Method: Lean backwards against the equipment, holding the side bars firmly for support.

youdao