短語(yǔ)詞組短語(yǔ)by easy stages 從容不迫地;不遲不疾地;不時(shí)停下休息;途中有停歇地Test By Stages 試騐分期migration by stages 段性Operation by stages 分期投産by stages detail 分期Synthetical Algorithm By Stages 堦段式綜郃算法to control by stages 分期控制teaching by stages 堦段教學(xué)goals by stages 分期目標(biāo) 返回 by stages