sound泛指任何声音,不论其高低、是否悦耳等.如： I heard the sound of running water. 我听见流水声. Light travels faster than sound. 光比声音传播得快. voice用于人时,指说话、歌唱或发笑的声音,也可指发言权.用于其它方面时,常含悦耳之声,如鸟鸣声,乐器声音等.如： Please speak in a louder voice. 请大声说. 且有voice from somebody sound from something
