| 单词 | navigation spade | 
| 释义 | > as lemmasnavigation spade ΚΠ 1829    J. Yule in  Prize-ess. & Trans. Highland Soc. Scotl. 7 395  				[Netherby, Cumberland] The round-mouthed spades used in forming canals, &c., called here Navigation Spades. < as lemmas  | 
	
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