This exercise helps you learn how to project your voice to various distances and directions at different voice volumes.
在训练发声系统期间，分别使用高、中、低三种音量来重复以上练习。
This exercise helps you learn how to project your voice to various distances and directions at different voice volumes.
在训练发声系统期间，分别使用高、中、低三种音量来重复以上练习。
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