Security forces at a impromptu checkpoint marked by a small minibus wave us by.

驻扎在一个以一辆小型面包车为标志的临时检查站的安全部队挥手示意我们通过。

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Although Jackson's family have not yet decided on the details of a tribute to the singer, impromptu ones like the one at the Apollo are already being held across the US.

尽管杰克逊的家人还没有确定献给这位歌手的颂词的细节，但像在阿波罗剧院那样即兴而作的颂词已经传遍了美国。

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A quick mental check of these questions will help ensure that even impromptu remarks are audience-centered.

对这些问题快速地考虑一下，就会保证你的即席演讲以听众为中心。

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(OMITTED) A lawyer from nearby Maryland, who did not want to give his name, engaged in an impromptu debate with Tea Party supporters and later expressed concern about some of their rhetoric.

VOA: standard.2010.04.15

With an impromptu a cappella performance, the boys sing their way into a deal.

FORBES: Behind The Music

The space agency never before staged such a fast, impromptu spacewalk for a station crew.

WSJ: Spacewalkers Replace Space Station Pump

We can say, however, that a clementine or other malleable citrus fruit makes an impromptu prop in a pinch.

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