octave
英 美
He's singing an octave lower than the rest of us.
他唱的比我们其他人都低八度。
Running up to an acid semitonal acciaccatura in both hands, the piano goes over into a sprint of octave-chords and single notes.
钢琴的两只手以半音阶短倚音向上,转变成八度和弦和单音符。
It's got only six notes within the octave.
一个八度里只有六个音符。