[yù xiān]
in advance; beforehand
be beforehand with one's packing
預先打好行李
thank sb. in anticipation
預先感謝
forewarn
預先警告
state explicitly beforehand
預先聲明
notify in advance
預先通知
She is always beforehand with the rent.
她總是預先付房租。
Everything has been fixed in advance.
一切都已預先安排妥當。