韵

例句：

1. 1. The poem has a beautiful melody that is hard to forget.
   这首诗有一个美妙的旋律，难以忘记。
2. 2. The music has a unique rhythm that makes it stand out.
   这首音乐有一种独特的节奏，使它脱颖而出。
3. 3. The singer's voice has a pleasant tone that makes everyone happy.
   歌手的声音有一种愉悦的音调，使每个人都感到快乐。