Definition: the sounds that are made when people speak or sing Level: B1
老师的响亮声音在教室后排都能听到。
The teacher's loud ___voice could be heard at the back of the classroom.
他担忧的声音透露出他对她安全的关心。
His worried ___voice revealed his concern for her safety.
当她讨论机密事宜时，她压低了声音。
She lowered her ___voice when discussing the confidential matter.
