即兴演讲
A speech delivered without any preparation.
没有任何准备就发表的演讲。
即兴派对
A party organized spontaneously without advance planning.
自发组织的、没有提前计划的派对。
即兴新闻发布会
A press conference called suddenly, often in response to a recent event.
几乎或完全没有准备就安排或举行的发布会。
临时会议
A meeting arranged at short notice.
临时安排的会议。
即兴讲座
A lecture given without prior preparation.
事先没有准备的讲座。