1580s, "fortress commanding a city," from Middle French citadelle (15c.), from Italian cittadella, diminutive of Old Italian cittade "city" (Modern Italian citta), from Latin civitatem (nominative civitas; also source of Portuguese citadella, Spanish ciuadela; see city).
权威例句
1. The citadel was solid.
城堡是坚固的.
2. The business is no longer regarded as a citadel of commerce.
该行业不再被视为贸易的堡垒。
3. He died for Germany in the gigantic and futile operation called Citadel.
他在被称为“城堡”行动的一次大规模的劳而无功的战役中阵亡.
4. Hitler's response was to commit more and air wings to Citadel.
希特勒的反应是把更多的师和空军联队拨归“城堡”行动使用.
5. The citadel of the Commonwealth and Empire could not be stormed.