He improvised a bookcase out of crates.

他用板条箱临时做成书架。

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The professor improvised a poem in the class.

教授在课堂上即兴创作了一首诗。

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He worked late into the night and improvised a meal for himself.

他一直工作到深夜，于是为自己临时做了顿饭。

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Coalition forces say it is a stronghold for the Taliban, where they make many of the Improvised Explosive Devices that are a daily hazard for troops and local Afghans.

VOA: standard.2010.08.04

John Crowder put folding chairs in a hay pasture and improvised a pulpit on a truck flatbed.

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Are you a soccer lover who has improvised a game or its implements?

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They improvised a communal hut by overturning the three lifeboats.

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