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1·He emphasized how little was known about the disease.

他着重指出对这种疾病所知甚少。《牛津词典》

2·Until recently, not much was known about the topic, and little help was available to teachers to deal with bullying.

过去人们对这个话题所知甚少，老师们也很难得到帮助来应对欺凌问题，直到最近这个情况才发生了改变。

3·Because few mainstream publications have done in-depth features on regular African-American women, little is known about who we are, what we think and what we face on a regular basis.

由于主流出版物很少对普通的非洲裔美国妇女做深入的专题报道，因此人们对我们是谁、我们的想法和我们平常面对的事情知之甚少。

4·A recent email from the yarn company Red Heart titled Health Benefits of Crocheting and Knitting prompted me to explore what else might be known about the health value of activities like knitting.

红心纱线公司最近发布的一封题为“钩编和针织对健康的益处”的电子邮件，促使我探索编织之类的活动带来的健康价值中还有什么其他需要知道的。

5·I wish we'd known about it beforehand.

要是我们预先知道这事就好了。《牛津词典》

6·Nothing is known about her parentage and background.

她的家世和来历不明。《牛津词典》

7·The drug is not a new discovery—it's been known about for years.

这种药并不是什么新发现—多年前便为人所知。《牛津词典》

8·I wonder whether he has already known about the result.

我不知道他是否已经知道了结果。

9·One day they'll wake up and discover that everything they've always known about windows is a lie.

有一天，他们会开始了解真相，并且发现他们一直以来所知道的关于窗户的一切，是一个谎言。

10·Although we've known about global warming (全球变暖) for a long time, people have been slow to respond to it.

尽管人们已经知道全球变暖很久了，但却迟迟不做出行动。