词典释义：
existing or coming before in time, order, or importance
（时间，顺序，重要性）在先的，在前的；居先的；先前的
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he has a prior engagement this evening .他今晚已有约会在先。
〈北 美，非正式〉 犯罪前科
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he had no juvenile record, no priors .他没有少年犯罪记录，没有前科。
the male head of a house or group of houses of certain religious orders, in particular
（某些宗教教会的）男主持，尤指：
the man next in rank below an abbot
男修道院副院长；男副主持。
the head of a house of friars
托钵会会长。
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prior to before a particular time or event 在…以前；先于；优先于she visited me on the day prior to her death . 她去世的前一天还来看我
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prior to doing 在做…之前
真题例句：
"early 18th cent.: from Latin, literally ‘former, elder'， related to
