prior to something

formalBEFORE before 在某事之前，先于某事

All the arrangements should be completed prior to your departure.

你离开之前一切都要安排好。

Examples from the Corpus

prior to something• Prior to 1492, no human in the Old World had ever eaten corn.• They're planning to talk to Joe prior to the meeting.

→ prior to something at prior1(2)