1、Feudal society was characterized by the rigid social hierarchy and the allegiance to a lord.
封建社会的特点是严格的社会等级制度以及对领主的效忠。

2、During the feudal era, land ownership was the basis of power and authority.
在封建时代，土地所有权是权力和权威的基础。

3、The feudal system in medieval Europe granted rights and privileges to the nobility while placing the peasants in a state of servitude.
中世纪欧洲的封建制度赋予贵族权力和特权，而把农民置于奴役状态。