prior to含义:从前的;在……之前;在之前。用法是:
1、Late applications must be submitted at least four months prior to the beginning of a term and will beeviewed.
迟到的申请书必须在新学期开始前的四个月前呈交上来,以便进行核查。
2、Two of the three fires occurred when Ford employees were driving the car prior to their delivery to customers.
有两次自燃都发生在向顾客交车之前,也就是说当时是福特的员工在驾驶汽车。

词义辨析
previous,foregoing,preceding,prior,former这些形容词均可表示“在前的”之意。
previous指时间上、顺序上较早的,或指正在谈论的某事的前一个。
foregoing指前所述的,是following的反义词。
preceding特指时间和地位上紧接在前。
prior与previous同义,常可换用,但prior有时强调更大的重要性,对比意味强。
former系latter的反义词,比prior更着重对比。
