pre·pa·ra·to·ry /prɪˈpærəˌtori, ˌtɔr ||ˈprɛp(ə)rə-/
  (a.)預備的,準備的,初步的預科(ad.)在先前
  Pre·par·a·to·ry a.  Preparing the way for anything by previous measures of adaptation; antecedent and adapted to what follows; introductory; preparative; as, a preparatory school; a preparatory condition.
  ◄ ►
  preparatory
       adj : preceding and preparing for something; "preparatory steps"
             [syn: preparative, propaedeutic]