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	abozzi abozzo abp abr abra abracadabra abracadabras abrachias abradable abradants abrade abraded abrader abraders abrades abrading Abraham Abraham's bosom Abraham-man abraham-men abrahams abraided abraiding abraids abram

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