【词组】

(1) prior “先前的，较早的，事先安排的”

四级词汇

(2) prior notice “预先通知”

(3) prior warning “预先警告”

(4) prior claim “优先权”

(5) prior to sth. “在......之前”，正式用语

近义词before

【例句】

All the arrangements should be completed prior to your departure.

你离开之前一切都要安排好。