citadel

柯林斯詞典

1. N-COUNT In the past, a citadel was a strong building in or near a city, where people could shelter for safety. (古時(shí)建在城市里或城市附近，保護(hù)民眾安全的)堡壘
The citadel at Besan?on towered above the river. 貝桑松城堡高過河面。
2. N-COUNT If you describe a system or organization as a citadel of a particular way of life, usually one you disapprove of, you mean that it is powerful and effective in defending that way of life. 堡壘; 指強(qiáng)有效保護(hù)型的生活方式[正式] [usu N 'of' n]
The business is no longer regarded as a citadel of commerce. 這個(gè)生意已經(jīng)不再被看作是商業(yè)堡壘了。