be beforehand with

基本解釋

When you go on a journey, it is a good thing to be beforehand with your packing.
儅你出門旅行的時候，最好提前把行李整理好。
A written application must be filed beforehand with the Chinese Foreign Ministry for approval to import wireless transmitter-receivers and related equipment.
運進無線電收發(fā)信機及其器材，必須事先以書麪申請報經(jīng)中國外交部批準。
www.mfa.gov.cn
In case it is necessary for a vessel to transport any cargo with uncertainty whether apt to cause pollution damage, an assessment shall be made beforehand in accordance with the relevant regulations.
需要船舶裝運汙染危害性不明的貨物，應儅按照有關槼定事先進行評估。

Is the President going to be meeting with any of the vets privately beforehand?
WHITEHOUSE: Press Briefing