extemporaneous
英
美
adj. 即席的，当场的；无准备的；临时的；权宜之计的
COCA.34062
英英释义
adj
- 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