n.城堡；要塞
Here was a citadel in the Second World War. 在二战中，这儿是一处避难所。
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。
He made a citadel of personal excellence. 他具备人的各种美德。
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。
