The teacher asked me to increase an octave in this part of the singing.

老师要我在这段歌唱中提高一个八度。

The editor modified the content of the octave.

编辑修改了这首八行诗的内容。

The old artist's vocal range crossed five octaves.

这位老艺术家的音域横穿了五个八度。

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 covers about an octave.

它大约占一个倍频程。

Can you span an octave on the piano?

乍能按到钢琴的八个键吗？

It's got only six notes within the octave.

一个八度里只有六个音符。