trunk sewer污水: sewage; slops; effluent; dra ...干渠: main canal干: trunk; main part管: pipe; tube污水干渠: trunk sewer下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:污水干渠；污水干管，即可在微信中查询翻译
