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	nartheciums narthex narthexes nartje nartjie nartjies Naruhito Narva Narvik Narváez narwals narwhal narwhale narwhales narwhals nary nary a nary an nas NAS nas de gor nas national park reserve NASA nasal nasal capsule

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。