原形：impromptu复数：impromptus

They're having an impromptu meeting.
他们在开一个临时会议。
We present an impromptu for the visitors.
我们为来访者献上了一场即席的演出。
Mary played a tune impromptu.
玛丽即席演奏了一曲。
The host's impromptu speech was both charming and inspiring.
主持人即兴的演讲既迷人又鼓舞人心。
She gave an impromptu performance on the piano, mesmerizing everyone present.
她在钢琴上即兴演奏了一曲，迷住了在场的所有人。
The comedian's ability to deliver impromptu jokes kept the audience in stitches throughout the show.
这位喜剧演员即兴讲笑话的能力让观众在整个演出中笑声不断。
An impromptu celebration broke out when the team heard they had won the championship.
当队伍听说他们赢得了冠军时，一场即兴的庆祝活动爆发了。
The teacher turned the power outage into an opportunity for an impromptu discussion on problem-solving strategies.
老师把停电变成了一次讨论解决问题策略的即兴机会。
They decided to have an impromptu picnic by the lake on such a beautiful day.
在这样一个美好的日子里，他们决定在湖边举行一次即兴野餐。
The actor's impromptu dance moves added an element of surprise to the live performance.
演员的即兴舞蹈动作给现场表演增添了几分惊喜。
After dinner, we had an impromptu singing session that lasted until midnight.
晚餐后，我们进行了一场持续到午夜的即兴唱歌会。
The CEO called for an impromptu meeting to address the urgent issue that had just arisen. (CEO召集了一个即席会议来处理刚刚出现的紧急问题。
Her impromptu decision to travel alone turned out to be a life-changing experience.
她即兴决定独自旅行，结果成为了一次改变生活的经历。