| 单词 | sump | 
| 释义 | sump    (sŭmp)n. 1.  a.  A low-lying place, such as a pit, that receives drainage. b.  A cesspool. 2.  A hole at the lowest point of a mine shaft into which water is drained in order to be pumped out. 3.  The crankcase or oil reservoir of an internal-combustion engine. [Middle English sompe, marsh, from Middle Low German sump or from Middle Dutch somp. Sense 2, from German Sumpf, swamp, sump, from Middle High German, swamp.]  | 
	
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