不秘not sound
【经】 明智的政策sound policy
耳鸣如蝉声ringing in the ears like the sound of cicadas
响声sound
爆炸声detonation sound【声】;explosion sound【声】
均方根声压root-mean-square sound pressure【声】
【物理】图像载体上的音轨sound track on photo carrier
语声出现（频）率frequency of occurrence of speech sound【声】