Some libraries carry a separate catalogue for each type of such audiovisual materials.有些图书馆对这类视听资料中的每一种都备有单独的目录.Would you please tell me how much this audiovisual disk is?请问这种声像带多少钱一盘?This paper presents an audiovisual c...
These can range from lighting dimmers and climate control systems to security and audiovisual appliances.这些设备包括从调光器、气候控制器到安全装置和音像设备.Would you please tell me how much this audiovisual disk is?请问这种声像带多少钱一盘?Some libraries c...