详细解释:n. 宣誓书
相关词组:
take one's davy
英语解释：
名词 davy:
English chemist who was a pioneer in electrochemistry and who used it to isolate elements sodium and potassium and barium and boron and calcium and magnesium and chlorine (1778-1829)同义词：Humphrey Davy, Sir Humphrey Davy