happening or existing before something else or before a particular time 先前的；较早的；在前的 Although not essential, some prior knowledge of statistics is desirable. 统计学的知识虽非必要，但最好是学过一点。 🔊🔊 This information must not be disclosed without prior written consent. 未事先征得书面许可，此消息不得泄露。 🔊🔊 Visits are by prior arrangement. 参观需要事先安排。 🔊🔊 Please give us prior notice if you need an evening meal. 需用晚餐者，请预先通知我们。 🔊🔊 She will be unable to attend because of a prior engagement. 因事先有别的安排，她将不能出席。 🔊🔊
already existing and therefore more important 优先的；占先的；较重要的 - prior to
before something 在…前面的 during the week prior to the meeting 在开会前的一周内
Word Originadjective early 18th cent.: from Latin, literally ‘former, elder’, related to prae ‘before’.