involving incest

The film is about Auteil's incestuous love for his sister. 这部影片讲述了奥泰尔和他妹妹的不伦之恋。

involving only a close or limited group of people, who do not communicate or do business with people outside the group

Journalists and politicians often have a rather incestuous relationship. 新闻记者和政客之间往往形成一种相当排外的关系。