impromptu

adj.

即席的；临时的；无准备的；

adv.

即席地；临时地；无准备地；

n.

即兴曲；即席演出；即席之作；即席演说

复数：impromptus

1. It usually take me more than three weeks to prepare a good impromptu speech.
   为了准备一则即席的好讲辞，我通常要三个星期以上。
2. An impromptu visit broke up the long afternoon.
   突然的造访打破了漫长的午后时光。

1. She played a tune impromptu.
   她即席演奏了一曲。

1. His call for a book of the trains had been a sheer piece of impromptu.
   他打听火车时刻表只是一段纯粹的即兴曲。

Impromptu asset tracking
System and method for impromptu shared communication spaces
Impromptu: An interactive programming environment for composition and performance
UbiTable: Impromptu Face-to-Face Collaboration on Horizontal Interactive Surfaces
UbiTable: Impromptu Face-to-Face Collaboration on Horizontal Interactive Surfaces
Piazza: a desktop environment supporting impromptu and planned interactions
Programming with time:cyber-physical programming with impromptu
Programming with time: cyber-physical programming with impromptu
The gender-linked language effect in primary and secondary students' impromptu essays
Impromptu: a new interaction framework for supporting collaboration in multiple display environments and its field evaluation for co...