preparatoryadj.预备的;准备的;初步的n.预备学校;预科(在美国指为升入大学做准备的学校)
Preparatory course Chinese teaching预科汉语教育
preparatory stage of airborne combat空降战半准备阶段
Preparatory Course for Master program研究生预科
Preparatory training or instruction.初步的训练或指导
preparatory office of hunan university湖南大学筹备处
preparatory meetings/studies/work预备性会议/研究/工作
preparatory procedure before civil trial民事审前准备程序
preparatory circumferential welding seam预留环缝