Marianne had not known until Arnold primed her for her duties that she was to be the sole female.

直到阿诺德向她交待她的职责时，玛丽安娜才知道她将是惟一的女性。

《柯林斯英汉双解大词典》

It is not known what causes the disease.

这种病的起因不明。

《牛津词典》

Velvet as a fabric is not known for its versatility.

天鹅绒作为一种织物并非以其用途广泛而闻名。

《柯林斯英汉双解大词典》

It is not known if the stories helped the company's sales, but they became extremely popular.

VOA: special.2009.01.24

He's one of the most famous scholars ever but he's not known for any single discovery.

他也是史上最著名的学者之一,但他不是因为某一项发现而名扬四海。

耶鲁公开课 - 心理学导论课程节选

Because there, it's not known for dive bars with cheap beers and pin darts and, you know, people getting in a bar fight.

因为那里不是因有便宜的啤酒和针头飞镖的廉价酒吧和酒吧打架闹事而闻名。

如果想去俱乐部 - SpeakingMax英语口语达人

The crazy food-fighting festival of La Tomatina began in 1945, but it is not known why.

BBC: Spain's La Tomatina festival

It was not known if Victoria Beckham accompanied her husband on the trip back to Spain.

CNN: Beckham flees sex claims storm

You have probably already been cloud computing for several years and not known it.

BBC: The business travel benefits of cloud computing