音标：['bækdeit]
vt. 写上比实际早的日期, 回溯
在线英汉词典

backdate的短语、例句：

backdate v [Tn] declare that (sth) is to be regarded as valid from some date in the past 宣布（某事物）自过去某日起即为有效
a pay increase awarded in June and backdated to 1 May 6月份发放的从5月1日算起的增薪.