短语词组短语pace settler 领跑者catalyst settler 催化剂沉降器;翻译;催化剂沉降器英语external settler 前床conic settler 锥形沉降器conical settler 锥形澄清器settler n 移居者foreign settler 外侨Settler Wagon 开拓者Settler Top 沉淀池顶 返回 settler