您要查找的是不是：
- It was written by an unknown author. 这书是一位无名作者写的。
- This prizewinning essay was written by an unknown author. 这篇获奖文章是由一位名不见经传的作家写的。
- The author had been an unknown until he published his recent book. 这位作家一直是个默默无闻的人，直到最近出版了他的一本书。
- The leading role is played by a complete unknown. 演主角的是一个毫无名气的演员。
- The star of the film is a previously unknown actor. 这部电影里的明星以前是个默默无闻的演员。
- The heroine is the spitting image of the author. 书中女主人翁是作者的真实写照。
- As to the author of the book, I will hazard a guess. 关於这本书的作者，我来试猜一下。
- Its greater part is unknown to me. 它的大部分对我是未知的。
- The author dedicated her new book to her supportive family. 这位作家将她的新书献给支持她的家庭。
- He was an unknown painter one year ago. 一年前，他还是一个不为人知的画家。
- The author is going to adapt his play for television. 作者将把他的剧本改编成电视剧。
- The author's fingerprint is quite obvious in all of his works. 作者的特色在他所有的作品中都很明显。
- This is a fact hitherto unknown. 这是一个至今无人知道的事实。
- A quantity of unknown numerical value. 未知数数值不明的一个数量
- Kate is in bad with Lucy for some unknown reason. 因为某些不为人知的原因，凯特和露西关系不好。
- We use x as the symbol for an unknown quantity. 我们用x表示一个未知数。
- This book shows that he is an ingenious author. 这本书表明他是一个有创造力的作家。
- It is no safe wading in an unknown water. 不知水深浅，涉水不安全。
- The investigation was tabled for reasons unknown. 不知何故调查延缓进行。
- The ownership of the house is still unknown. 这栋房子的所有权至今无人知道。
