演唱方法上的多样化，如，不同唱法上的纵向重叠。

The singing methods. are diversification such as the vertical overlap of different singing methods.

youdao

演唱方法上的多样化，如，不同唱法上的纵向重叠。

The singing methods. are diversification such as the vertical overlap of different singing methods.

youdao