| 单词 | pond-lock | 
| 释义 | > as lemmaspond-lock ΚΠ 1794    J. Rennie Rep. Surv. Thames 22  				I would therefore advise..a pond lock being placed adjoining the river. 1811    Two Rep. Thames Navigation 21  				The excellent state of the navigation arises from the erection of pond-locks. < as lemmas | 
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