Waves of deafening sound come from a steel pipe spiraling over the scaffolding, within which a set of invisible iron balls circulate endlessly around the exhibition space.
一阵阵震耳欲聋的声响冲击着观众的耳膜，声音来源于脚手架支撑的钢管，其中的封闭铁球不停地沿着展厅四周盘旋滚动。
Waves of deafening sound come from a steel pipe spiraling over the scaffolding, within which a set of invisible iron balls circulate endlessly around the exhibition space.
一阵阵震耳欲聋的声响冲击着观众的耳膜，声音来源于脚手架支撑的钢管，其中的封闭铁球不停地沿着展厅四周盘旋滚动。
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