即席的, 無準(zhǔn)備的:毫無準(zhǔn)備地說 、 表演 、 做或作曲的;臨場(chǎng)的.Spoken, performed, done, or composed with little or no preparation ; extemporaneous.即席的,即興的:未經(jīng)或很少準(zhǔn)備或構(gòu)思而講的 、 做的或譜寫的.Spoken, done, or composed with little or no preparation or forethought....