preparatory

preparatory talks to clear the way for a peace settlement.为缔结和平协议扫清道路的预备性会谈

preparatory drawings.草图

A lot of preparatory work still needs to be done..还有很多准备工作要做。

preparatory work,准备工作；筹备工作

preparatory stage,准备阶段；预备伐

preparatory committee,筹备委员会

preparatory course,预科；预备课程

preparatory school,预科；预备学校

preparatory meeting,筹备会议，预备会议

preparatory workings,[矿]准备巷道