extemporaneous
- adj. 即席的，临时的；无准备的；不用讲稿的；善于即席讲话的
英英释意
- 1. with little or no preparation or forethought;
- "his ad-lib comments showed poor judgment"
- "an extemporaneous piano recital"
- "an extemporary lecture"
- "an extempore skit"
- "an impromptu speech"
- "offhand excuses"
- "trying to sound offhanded and reassuring"
- "an off-the-cuff toast"
- "a few unrehearsed comments"