citadel

n.

城堡，要塞；大本营，根据地，避难所；（军舰上的）炮廓；

复数：citadels

1. Here was a citadel in the Second World War.
   在二战中，这儿是一处避难所。
2. This citadel is built on high ground for protecting the city.
   这座城堡建于高处是为保护城市。
3. Some of the rebels were killed in the act of storming the citadel.
   一些反叛者在突袭城堡时被杀。
4. He made a citadel of personal excellence.
   他具备人的各种美德。
5. They once were icons of integrity, citadels of civilization, bastions of benevolence.
   大学曾经是正直的象征，文明的堡垒，仁爱的捍卫者阵地。

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