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1·He improvised on the melody.

他即兴演奏了那首曲子。《牛津词典》

2·The vet had improvised a harness.

兽医临时凑成了一套马具。《柯林斯英汉双解大词典》

3·We improvised some shelves out of planks of wood and bricks.

我们用木板和砖头临时搭了些架子。《牛津词典》

4·Over the top, he managed to draw together two or three bushes, and the improvised wigwam was complete.

在顶上，他成功地把两三丛灌木丛拉到一起，就这样，一个简易棚屋完成了。

5·We are not sure how well we can reproduce the melodies or rhythms, because they were apparently improvised in many cases.

我们不确定我们能多完整地重现旋律或节奏，因为它们显然在很多情况下是即兴创作的。

6·Think of something as seemingly benign as the cellphone—we have microfinance and text-based social networking at one end of the spectrum, and improvised explosive devices at the other.

想想类似手机这种看似无害的东西吧——一方面，手机可以用来进行小额信贷和基于文本的社交，但另一方面，它也可以成为临时制作的爆炸装置。

7·The pianist improvised an accompaniment to the song.

那位钢琴家为那首歌即席伴奏。《新英汉大辞典》

8·For Stadium Arcadium, almost every guitar solo was completely improvised by Frusciante on the spot.

至于星战竞技场这首歌，每一个吉他独奏都是完全由弗鲁希安特当场即兴创作出来的。

9·He improvised a bookcase out of crates.

他用板条箱临时做成书架。

10·The professor improvised a poem in the class.

教授在课堂上即兴创作了一首诗。

临时做

1·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。