in advance
例子
Please let us know in advance if you plan to attend the meeting.
如果您计划参加会议，请提前告知我们。
She booked her flight tickets months in advance to get the best deal.
她提前几个月预订了机票，以获得最优惠的价格。
in advance
01
提前的，先行的
situated ahead or going before
