unit of pitch

例句：

1. 1. The music teacher taught us how toplay the piano in units of pitch.
   音乐老师教我们如何以音阶为单位演奏钢琴。
2. 2. In music, a unit ofpitch is equal to one semitone.
   在音乐中，一个音高单位等于半音。
3. 3. The composer used different units ofpitch to create a unique soundscape.
   作曲家使用不同的音高单位来创造独特的音响效果。