帝制

例句：

1. 1. The ancient Chinese emperor system is a unique political system.
   古代中国的皇帝制度是一种独特的政治体系。
2. 2.The monarchy in ancient Greece wasthe most prominent form of government.
   古希腊的君主制是最为显著的政治形式。
3. 3. Thefeudal system was prevalent during medievaltimes.
   封建制度在中世纪时期盛行。