即席的, 无准备的:毫无准备地说 、 表演 、 做或作曲的;临场的.Spoken, performed, done, or composed with little or no preparation ; extemporaneous.即席的,即兴的:未经或很少准备或构思而讲的 、 做的或谱写的.Spoken, done, or composed with little or no preparation or forethought....
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...