book和zoo的oo读音不一样。

book的oo发音是[ʊ]，意思是书，书籍。例句:He looks in the library content label to see if it had the book he wanted.他查阅了图书馆的图书目录，想看看是否有他需要的那本书。zoo的oo发音是[uː]，意思是动物园。例句:The latest victims have been the porcupines. In all, 36 were killed, of which six were ready to be donated to another zoo.最近死亡的动物是豪猪。共有36只被毒杀，其中6只正准备捐赠给另一个动物园。