One thinks one knows him very well分析下这个句子

One thinks one knows him very well分析下这个句子
新概念第四册第五篇,的一个句子.我觉得怪怪的.节选如下The gorilla is something of a paradox in the African scene.One thinks one knows him very well.For a hundred years or more he has been killed,captured,and imprisoned,in zoos.His bones have been mounted in natural history museums everywhere,and he has always exerted a strong fascination upon scientists and romantics alike.He is the stereotyped monster of the horror films and the adventure books,and an obvious (though not perhaps strictly scientific) link with our ancestral past.