the fact of being too interested in the details of another person's sexual behaviour

The author discusses his subject’s relationships without stooping to prurience. 作者讨论了他的主人公的情感关系，但并没有沦于淫秽。

His interest seems like prurience and nothing more to me. 在我看来，他似乎只对淫秽的事感兴趣。