例句與造句

1. Please hand the first copy for backup to the registration desk during the registration period from 08 : 00 to 08 : 50 on the morning of april 25 . please bring the second copy to the pre - session meeting for your presentation . immediately after your session is finished , please pick up your cd disk in the session room
   2 .攜帶光碟片：每一位論文宣讀人均應(yīng)于攜帶二片光碟片至?xí)觯谝黄獾堄谒脑露迦丈衔绨藭r至八時五十分期間交至報到柜臺（供備份之用） ，另一片光碟請攜至宣讀會場（供宣讀之用） ，并于該場次結(jié)束時于會場取回光碟片。
2. It's difficult to find pre-session in a sentence. 用pre-session造句挺難的