求翻译：中世纪为一个典型的贵族统治时期，贵族是维持统治的阶级结构，无论是否长官都有统治权，且成分复杂，并随早、中、晚期不断变化。是什么意思？

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For a typical of the medieval nobility, aristocracy is maintained during the rule of the ruling class structure, whether or not they are ministers have complicated ingredients, and the right to rule, and with morning, late, in constant change.

The middle ages are a typical aristocrat rule the time, the aristocrat are maintain dominant the class structure, regardless of whether the senior officials all do have the sovereignty, also the ingredient is complex, and along with, the later period unceasingly changes early.

Aristocrat during the rule of the middle ages as a typical, noble was to maintain the rule of class structure, regardless of whether the Chief Executive has the right, and the components of complex, along with early, middle and late-stage changes.