[yù xiān]
in advance; beforehand
be beforehand with one's packing
预先打好行李
thank sb. in anticipation
预先感谢
forewarn
预先警告
state explicitly beforehand
预先声明
notify in advance
预先通知
She is always beforehand with the rent.
她总是预先付房租。
Everything has been fixed in advance.
一切都已预先安排妥当。