My father was a historian of repute. His speciality was the history of Germany

　　我的父親是一名頗有名氣的歷史學家，他專門研究德國歷史。

　　Historian Michael Beschloss debunks a few myths.

　　歷史學家邁克爾·貝施洛斯破除了幾個不實傳言。

　　The students put the books on the library desk, and the librarian checked them in.

　　學生們把書放在圖書館的柜臺上，管理員查核后收回。

　　The computer can alter the Serials Librarian and produce a bindery notice.

　　計算機可提醒管理連續出版物的館員，并制作裝訂通知。

　　The study of subject knowledge services based on subject librarian system

　　基于學科館員制度的學科知識服務研究