十二开的书

例句：

1. 1. The library has a collection of twelve-volume books on ancient history.
   图书馆收藏了一套关于古代历史的十二卷书籍。
2. 2. She bought a twelve-volume book set for her grandson's birthday.
   她为孙子的生日买了一套十二卷书的套装。
3. 3. The old books were carefully organized by the librarian in a twelve-volume box.
   老书被图书管理员小心地装在了一个十二卷的盒子里。