on the books短语²⁸³⁹⁴ 基本例句 adj.已经注册登记已入会员名单 He says India and other countries have put environmental laws on the books, but that is not enough. 梅赫塔说，印度和其它国家已经制定了环境法，但是这还不够。 voanews Thousands of dinosaurs are now on record, with many of them probably being duplicates of animals already on the books. 目前有数以千计的恐龙记录在册，其中包括一些很有可能是已经记录过的动物的副本。 yeeyan