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来源：雅诚德英语网
What four things did the Lord provide or do for his vassel under the feudal system?
在封建制度之下，是哪四个事情国王供应或者是要作给他的臣子的？
What four things did the Lord provide or do for his vassel under the feudal system?
在封建制度之下，是哪四个事情国王供应或者是要作给他的臣子的？