octave

US /ˈɑktɪv, -ˌtev/

UK /'ɒktɪv/

C1 高級
n.名詞八度音階
The musicians all played the same tune together in different octaves, based on the pitch of their instruments

影片字幕

耳聽為憑? (Can You Trust Your Ears? (Audio Illusions))

03:30耳聽為憑? (Can You Trust Your Ears? (Audio Illusions))