ballroom ball

彰化縣田中鎮新民國小

The student is performing a ballroom dance solo with graceful movements. 

學生們正在以優美的動作表演交際舞獨奏。

His hands are up as if he were dancing with a partner in a ballroom dance. 

他的手向上，彷彿正與舞伴一起跳交誼舞。