The building was reduced to a heap of rubble.

大楼变成了一片残垣断壁。

《牛津词典》

All the buildings in the town have been reduced to rubble.

镇上所有的建筑都变成了瓦砾。

《柯林斯英汉双解大词典》

They were reduced to extreme poverty.

他们沦落到极度贫困的地步。

《柯林斯英汉双解大词典》

But now,military officials say the area held by the Tamil Tigers has been reduced to just a few square kilometers of beachfront.

VOA: special.2009.05.16

De Man's point is a question is both rhetorical and grammatical, and the one cannot be reduced to the other. Both readings are available.

德曼想指出的是，一个问句既是修辞型问句又是语法型问句，那么一个不能变成另一个，两种理解都有效。

耶鲁公开课 - 文学理论导论课程节选

We thought that the Taliban will be reduced to a minor irritating factor within 6 months to a year.

我们原以为,在六个月到一年之内塔利班分子会减少成为一个很小的势利。

普林斯顿公开课 - 国际座谈会课程节选

She was reduced to having to petition the court for money to get her lawn mowed.

FORBES: "We're On A Collision Course"

Africa is too complex, too diverse, to be reduced to a handful of phrases.

FORBES: Notes From A Distant Node

The sentence was later reduced to 12 months and suspended by the Court of Appeal.

BBC: SAS sniper Danny Nightingale to face retrial