preparatory

预备的、准备性的、筹备的

The committee held a preparatory meeting before the formal negotiations began.

委员会在正式谈判开始前召开了筹备会议。

预科的、升学预备的教育

She teaches history at a preparatory school for girls.

她在一所女子预备学校教历史。

在…之前、为…做准备正式

He cleared his desk preparatory to leaving the company.

他在离职前把办公桌整理干净。