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	pactum donationis pactum il pactum illicitum pactum le pactum legitimum pactum prae pactum praetorium pactum vestitum pad pad dyeing pad eye pad hook pad roll pad room pad saw pad thai Padang padangs padauk padauks Padaung padaungs padcloth Padda paddae

英语词典包含469781条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。