combined sewer合流: flowing together; interflow; ...沟渠: ditches水流沟渠: waterborne sewerage沟渠合流制: water-borne sewerage合流排水沟渠: combined ditch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:合流沟渠，即可在微信中查询翻译
