author          
 noun [ C ] uk/ˈɔː.θər/ us/ˈɑː.θɚ/
B1 作者,作家;著者
the writer of a book, article, play, etc.
  He is the author of two books on French history. 他是两部法国历史著作的作者。 
  formal发起者,创始人 
a person who begins or creates something
  She's the author of the company's recent success/of all our troubles. 是她给公司带来了最近的成功/我们所有的麻烦都是她造成的。 
 - More examples
 - The author has tried to deal with a very difficult subject.
 - In his preface, the author says that he took eight years to write the book.
 - She's a best-selling author .
 - He's the author of several hugely successful children's books .
 - There was a biographical note about the author on the back of the book.
 
author          
verb [ T ] uk/ˈɔː.θər/ us/ˈɑː.θɚ/
 formal撰写,写作;编写 
to write a book, article, etc.
  He has authored more than 30 books. 他已经写了30多本书。 
  mainly US发起,始创;创造 
to create something
  The deal is being authored by a Greek diplomat. 一位希腊外交官正在牵头促成这项协议。