in advance

同义
in advance beforehand ahead
词性
r
解释
ahead of time; in anticipation
示例
when you pay ahead (or in advance) you receive a discount|We like to plan ahead|should have made reservations beforehand

同义
in advance advance advanced
词性
s
解释
situated ahead or going before
示例
an advance party|at that time the most advanced outpost was still east of the Rockies