18世纪在欧洲发展的社会制度；诸侯受统治者的保护并为其服兵役。

18世纪在欧洲发展的社会制度；诸侯受统治者的保护并为其服兵役。的英文翻译

基本释义

• the social system that developed in Europe in the 8th C; vassals were protected by lords who they had to serve in war.