1. He is a renowned bibliographer who has published numerous works on the history of printing.
他是一位著名的文献学者，发表了许多关于印刷历史的著作。
2. The librarian consulted the bibliographer to help determine the appropriate categorization for the newly acquired books.
图书管理员咨询了编目学者，以帮助确定新收到的书的适当分类。