- "She lived unknown and few could know"-- how can she be unknown if few know anything about her?

她不为人知地活着，鲜有人知道她“,如果有任何人知道关于她的任何事情,又怎么能说他不为人知呢？

耶鲁公开课 - 文学理论导论课程节选

Now it's just possible that they're in that big archive somewhere, and I just haven't found them yet.

在某个,不为人知，的角落中。

耶鲁公开课 - 1945年后的美国小说课程节选

and it struck me that that there was a lot missing from the picture that has been given in Washington as they were trying to set policies that would affect education, that would affect the regulation of entertainment in terms of understanding of young people's relationships to technology.

让我感到震惊的是,在整件事情上还有许多东西不为人所知,在华盛顿这些都展示于世人面前,正如他们在制定政策,能够影响教育的发展，影响娱乐业的行业规则,至于了解,年轻人与技术的关系。

麻省理工公开课 - 媒体、教育、市场课程节选

Outside the West, republics have been unknown.

西方之外,共和国的概念不为人知

耶鲁公开课 - 古希腊历史简介课程节选

Another famous study was called The Seven Country Study done by a researcher at The University of Minnesota named Ancel Keyes. Now he was very well known -he was a very good scientist and known for two different kinds of studies, much different from one another.

另外一个著名研究叫做七国研究,是由明尼苏达大学一位,叫安塞尔.凯斯的研究员主持的,他现在是一位非常出色的科学家,他主要因为两项不同的研究为人所知,那是两个很不一样的研究

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选