相关单词近义词 preliminary 初步的, preparative 准备的, introductory 介绍的, foundation 根基, elementary 基本的, opening 开口, propaedeutic 预备的临近词prepare, preparation, preparatory to, preparatory cut, preparatory set, preparatory team, preparatory plan, preparatory fund, preparatory talk, preparatory work, preparatory cost, preparatory fire 返回 preparatorily