骑士服务欧洲封建制度下为获土地而服的兵役以服兵役为条件获得的对土地的占有权
Knight service was the military service performed under the feudal system in Europe to obtain land, and the right to possess the land was obtained on the condition of military service
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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