in advance

• 预先通知

  notify in advance

• 预先准备

  prepare

• 预先声明

  state explicitly beforehand

• 预先规定

  predetermine

• 预先布置

  fix up beforehand

• 预先收费

  make advance charges

• 把问题预先解决

  solve the problem in advance

• 必须预先得到许可。

  You must get permission in advance.