体操运动员在平衡木上练习平衡 Gymnast practicing her balance on a balance beam

一个技术娴熟、经验丰富的体操女孩，在一个空旷黑暗的体育馆里的酒吧里做一些练习来练习平衡。

Skillful and experienced gymnast girl, practicing her balance with some exercises on a bar in an empty dark gymnasium.