to reduplicate his efforts
加倍努力
the upper parts of the harmony may be reduplicated at the octave above.
和声的上半部可以在上面的八度和音处重复。
to reduplicate his efforts
加倍努力
the upper parts of the harmony may be reduplicated at the octave above.
和声的上半部可以在上面的八度和音处重复。
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