scourings的精選

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用“scourings”造句大全，scourings造句

用“scourings”造句大全，scourings造句

2017-07-29
"Sewagesludge"meanssludgearisingfromurbaneffluenttreatmentplantandincludespretreatmentwaste,scouringsandunstabilisedsludge.Forthepurposesofheading38.25,"sewagesludge"meanssludgearisingfromurbaneff...