单词	back vent
释义	back vent noun : a ventilating pipe attached to a waste pipe on the sewer side of its trap to prevent siphonage back venting noun Word History First Known Use 1915, in the meaning defined above
随便看	annameses annamite annamites annams Annan annapoles Annapolis Annapolis Basin annapolises annapolisses Annapolitan Annapurna annapurnae annapurnas annas annat annates annats annatto annatto tree annattos anncr Anne Anne of Austria Anne of Cleves

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