book the book为什么第一个book的意思是预定呢?

book [buk]
　　n. 书, 书籍, 帐簿, 名册, 工作簿
　　vt. 登记, 预订
　　vi. 登记, 预订
　　[计] 工作簿
　　[经] 帐本, 注册, 挂号; 登记入册, 预定

　　book1
　　/ buk; bʊk/ n
　　[C] (a) number of printed or written sheets of paper bound together in a cover 书; 书籍: a leather-bound book 皮面装订的书. (b) written work or composition, eg a novel, a dictionary, an encyclopedia, etc 着作: writing/reading a book about/on Shakespeare 写[读]关於莎士比亚的书.
　　[C] number of blank or lined sheets of paper fastened together in a cover and used for writing in 簿; 本子: Write the essay in your (exercise-)books, not on rough paper. 把文章写在练习簿里, 不要写在草稿纸上.
　　books [pl] written records of the finances of a business; accounts 帐簿: do the books, ie check the accounts 查帐 * The company's books are audited every year. 这家公司的帐目每年都核对.
　　[C] number of similar items fastened together in the shape of a book 装订成书本形的同类物品: a book of stamps/tickets/matches 一沓邮票[票/火柴].
　　[C] any of the main divisions of a large wri