ball complement bore diameter

例句：

1. 1. The ballroom dance is a popular form of entertainment.
   舞厅舞蹈是一种流行的娱乐形式。
2. 2. She played the piano beautifully in the concert.
   她在音乐会上弹钢琴演奏得非常好。
3. 3. The ball was held at the city center last night.
   昨晚在市中心举行了球赛。