principate
/ˈprɪnsɪpət/noun
- the rule of the early Roman emperors, during which some features of republican government were retained（古罗马的）帝国君主政体（期间保留着共和政府的一些特征）。
词源
late Middle English (denoting a principality)： from Latin principatus 'first place'， from princeps, princip- 'first， chief' （see PRINCE）. The current sense dates from the mid 19th cent.