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来自维基百科，自由的百科全书
城堡主楼（英语：Keep、法语：donjon）为西方中世纪城堡中防御台楼，相当于东亚的牙城或日本的天守。城堡主楼是城堡中防卫最严密的地方，通常位于城堡中央的位置，用来作为居住区或监狱之用，用来保卫食物、水井、武器库房。当敌人包围城堡时，守军可以退守于此。[1]
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Every time you click a link to Wikipedia, Wiktionary or Wikiquote in your browser's search results, it will show the modern Wikiwand interface.
Wikiwand extension is a five stars, simple, with minimum permission required to keep your browsing private, safe and transparent.
