Sound is a term used in Engpsh to refer to audible vibrations that travel through a medium, such as air, and can be perceived by the ear. It comes from the Old Engpsh word "sund" which means "noise, tune, melody."
Example sentences in Engpsh and their Chinese translations:
The sound of the waves crashing on the shore was soothing.
(海浪撞击海岸的声音令人安抚。)
I couldn't hear the sound of the birds singing over the sound of the traffic.
(我听不到鸟儿歌唱的声音，因为交通声太响了。)
The sound of his laughter filled the room.
(他的笑声充满了房间。)