事先；早一些to bring forward; in advance; early

• 提前完成任务

  fulfil a task ahead of time

• 提前三年完成计划指标

  fulfil the target of a plan three years early

• 提前实现

  realize in advance

• 提前出发

  set off early

• 提前付款

  pay in advance

• 把完成期限提前三个月

  bring the completion deadline forward by three months

• 提前两年开发了林区

  develop a forest area two years ahead of time

• 请你提前来。

  Please come early.

• 能提前知道才好。

  It is best to know in advance.