| 单词 | dredge-sump |
| 释义 | > as lemmasdredge-sump dredge-sump n. ΚΠ 1849 G. C. Greenwell Gloss. Terms Coal Trade Northumberland & Durham 24 Dredge Sump, a reservoir through which a current of water is sometimes made to flow before passing to a pump, in order that any small stones or sludge may be retained. < as lemmas |
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