She was kept in ignorance of her husband's activities.

关于丈夫的活动，她一直蒙在鼓里。

《牛津词典》

He schemed to keep his rivals in ignorance of his plans.

他图谋不让他的对手们知道他的计划。

youdao

I don't advocate living in ignorance of what's going on in the world, but try cutting out news for 30 days and see how much you really miss.

我并不是鼓吹不关心世界的变化，但试一下30天不看新闻，然后看你是否真的会错过什么。

youdao

It started with arrogance, and ended in ignorance of what vehicles the market wanted.

ECONOMIST: The rule of law

Sadly, the European Central Bank has been aping the Fed's tightness and, like the Fed, has been doing so in ignorance of the deflationary impact.

FORBES: Fact and Comment

Despite the possibility of nerve damage (or perhaps in ignorance of it), many people are willing to take the risk of treating themselves with thalidomide.

ECONOMIST: Thalidomide: On probation | The