单词	mastery
释义	mas·ter·y (măstə-rē) n. pl. mas·ter·ies 1. Possession of consummate skill. 2. The status of master or ruler; control: mastery of the seas. 3. Full command of a subject of study: Her mastery of economic theory impressed the professors.
随便看	primary atypical pneumonia primary biliary cirrhosis primary care primary cell primary coil primary color primary consumer primary election primary growth primary meristem primary root primary school primary stress primary structure primary succession primary syphilis primary tissue primary tooth primary verb primary xylem primate primatial primatological primatologist primatology

英语词典包含135693条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。