what is the sound和what is sound分别是什么意思,有什么区别

what is sound engineering. what is orange and sound like parrot sound as if 和sound like有什么区别? sound as if 和sound like有什么区别 sound 和 sounds有什么区别,分别用在什么时候 our school motto is "a sound mind in a sound body".what do y hear 和sound有什么区别? What is known to us that the light travels faster than sound what is it?和what it is?有什么区别 what it is?和 what is it?有什么区别? what the matter is 和 what the problem is 有什么区别? The sound is wonderful _____