adj.无准备的；即席的；临时的

The professor delivered an extemporary lecture on the history of art.
教授即兴地做了一场关于艺术史的演讲。
He is known for his ability to speak extemporaneously on any topic.
他以能就任何话题即兴发言而闻名。
The actor gave an extemporary performance that amazed the audience.
那位演员的即兴表演令观众惊叹不已。
She was asked to give an extemporary speech at the conference.
她被要求在会议上做一场即兴演讲。
The minister answered the reporter's questions extemporaneously without any prepared notes.
部长没有准备笔记，即席回答了记者的问题。
His extemporary remarks during the award ceremony were both humorous and insightful.
他在颁奖典礼上的即兴评论既幽默又深刻。
The debate required participants to argue extemporaneously based on the given topics.
辩论要求参与者根据给定的话题即兴论证。
She is skilled in extemporaneous preaching, connecting with her congregation effortlessly.
她擅长即兴布道，能毫不费力地与会众产生共鸣。
The musician's extemporary composition was a true display of his creativity.
音乐家的即兴创作真正展示了他的创造力。
In court, the lawyer presented his arguments extemporaneously, impressing the jury with his quick wit.
在法庭上，律师即兴陈述了他的论点，以其敏锐的才智给陪审团留下了深刻印象。