Other models exist that are hybrids of thesethree, such as delayed open-access, where journalsallow only subscribers to read a paper for the firstsix months, before making it freely available toeveryone who wishes to see it.
【分析】复合句。主句的主干是 Other models exist。that引导的定语从句修饰 Other models,但该从句和其先行词被主句的谓语 exsit 分隔开,形成了分隔结构。such as...为插入语,通过举例对前句予以说明。where 引导非限定性定语从句,修饰 delayed open-access,介词结构 before making it...作状语,其中 who 引导的定语从句修饰 everyone。
【译文】还有一些商业模式为以上三种主要模式的综合体,如延迟开放模式,即这些期刊前六个月只允许付费者阅读论文,然后才免费提供给所有想阅读的人。