And if a singer coughs, this can result in the bruising of the vocal cords.
出自-2013年6月听力原文
They are easily-available on the continent and they are useful if a singer has problems with his vocal cords and has to sing that night
出自-2013年6月听力原文
Paul, what advice would you give to singers facing voice problems?
出自-2013年6月听力原文