semiarc

例句：

1. 1. The music was so beautiful that it almost sounded like a full symphony.
   音乐如此美妙，几乎就像一场完整的交响乐。
2. 2. She played the piano with such skill that she could make a symphony out of just one pieceof music.
   她弹钢琴的技巧如此之高，她可以用一首曲子创作出一部交响乐。
3. 3.In jazz music, a symphony is often composed of four parts: melody, harmony, rhythm, and timbre.
   爵士乐中，一部交响乐通常由四个部分组成：旋律、和声、节奏和音色。