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1·I am in sheer ignorance of the matter.

我对此事全然无知。《新英汉大辞典》

2·The ignorance of protecting the environment would result in a lot of severe consequences.

忽视环境保护将会导致许多严重的后果。

3·He silently pleaded with me, almost as if to ask me why I was so intent on keeping him in the ignorance of childhood.

他在无声地恳求我，几乎像是在问我，为什么我如此坚决地要让他对童年一无所知。

4·Ignorance of roaming call charges is common.

不知道漫游电话收费情况很普遍。《柯林斯英汉双解大词典》

5·She displayed a woeful ignorance of the rules.

她对这些条例表现出可悲的无知。《牛津词典》

6·Ignorance of people brings fear, fear of the unknown.

人的无知带来了恐惧，对未知事物的恐惧。《柯林斯英汉双解大词典》

7·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》

8·I am beginning to feel embarrassed by my complete ignorance of world history.

我开始为自己对世界历史的一无所知感到尴尬。《柯林斯英汉双解大词典》

9·Many country towns were still living in blissful ignorance of the post-war crime wave.

很多乡间小镇对战后的犯罪潮一无所知，依然生活在无忧无虑中。《柯林斯英汉双解大词典》

10·Unlike math or science, ignorance of history cannot be directly connected to loss of international competitiveness.

与数学或科学不同，对历史的无知与丧失国际竞争力没有直接联系。