co-author
noun [ C ] uk/kəʊˈɔː.θər/ us/koʊˈɑː.θɚ/
（书、文章或报告等的）合著者
one of two or more people who write a book, article, report, etc. together
co-author
verb [ T ] uk/kəʊˈɔː.θər/ us/koʊˈɑː.θɚ/
共同执笔，共同撰写，合著
to write a book, article, report, etc. together with another person or other people
Robert and his daughter have co-authored a diet book specifically written for young women. 罗伯特跟他女儿一起写了一本有关健康饮食的书，阅读对象是年轻女性。