良师益友scholarly mentor and beneficial friend; mentor
原声例句
VOA Special 2017年4月合集
Experts usually write the pieces found in scholarly publications.
专家通常撰写学术出版物中的文章。
TED-Ed(视频版)
If this sounds like a conspiracy theory, that's because it sort of was at the time, but it's now taken quite seriously and has been the subject of considerable scholarly publication.