ladder-likeCOCA²³⁵²⁶¹BNC¹⁴⁴⁶⁶⁴⁺³ 基本例句 un.梯状的；🌏类似阶梯；梯形条纹状 Objective: To study of the efficacy of ladder-like therapy to prevent recurrence of peptic ulcer, four kinds of medicine were used for the ladder-like treatment of peptic ulcer. 目的：用四种治疗消化性溃疡的药物对消化性溃疡患者进行阶梯性治疗，观察其预防复发的临床功效。 cnki