1)principal,主要的;校长;本金2)principal,最重要的,主要的n.负责人,校长;资本,本金3)principal,主要的;本金4)master,①主人，雇主 ②主要的，基本的,③校对规5)chief,首长;主要的6)《Qian Jin Yao Fang》 of Song Dynasty Edition,《千金要方》宋校本
用法和例句
Study on the Similarities and Differences between 《Qian Jin Yao Fang》 of Song Dynasty Edition and of Newly Carved Edition;