centre notes

例句：

1. 1. The rhythm of the song centres around a particular note.
   这首歌的节奏以某个特定的音节为中心。
2. 2. The teacher stressed the importance of understanding the central idea of the text.
   老师强调了理解文本中心思想的重要性。
3. 3. The performance was centred on the lead singer's powerful voice.
   表演的焦点是主唱那富有力量的声音。