史学 shǐxué historiography Definitions Defs Origin Strokes Stroke Words Sentences Sents 历史学家 lìshǐxuéjiā historian 史学家 shǐxuéjiā historian historian; historiographer历史学 lìshǐxué history the study of history; historiography地史学 dìshǐxué historical geology the branch of geology that studies the history of the earth; geohistory
