名词
中文翻译：临时的
同义词：
['impromptu', 'spontaneous例句：1. The performer was asked to give an extempore speech at the event.（该表演者在活动中被要求即兴演讲。）']
例句：
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1. The performer was asked to give an extempore speech at the event.
该表演者在活动中被要求即兴演讲。
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2. The director decided to use a new script for the film, which was an extempore choice.
导演决定使用一个新的剧本，这是即兴的选择。
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3. The teacher gave the students an extempore quiz on their knowledge of history.
老师给学生出了一个关于他们历史知识的即兴测验。