| 单词 | iron walls | 
| 释义 | > as lemmasiron walls   iron walls  n. the iron or ironclad ships of the Royal Navy, considered as Britain's defences; cf. wooden walls n. at wooden adj. Compounds 2. ΘΚΠ society > armed hostility > hostilities at sea > navy > 			[noun]		 > the British navy > as defence wall1436 wooden walls1598 iron walls1835 1835    Army & Navy Chron. 24 Dec. 412/1  				What may hereafter be the great bulwark of the nation—the superiority of a fleet of British iron steam-ships—the iron walls of Old England! 1897    Westm. Gaz. 26 June 1/3  				Fortified by the sense of our iron-walls. 2007    P. Brendon Decline & Fall of Brit. Empire viii. 231  				A prime concern was the security of Britain's iron walls. < as lemmas  | 
	
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