柯林斯詞典backdate /?b?k?de?t/ (also back-date) (backdating,backdated,backdates) 1. V-T If a document or an arrangement is backdated, it is valid from a date before the date when it is completed or signed. (實(shí)際生效日) 追溯到 The contract that was signed on Thursday morning was backdated to March 11. 星期四上午所簽的合同從3月11日起生效。 返回 backdate劍橋詞典to make something, especially a pay increase , effective from an earlier time 使（尤指漲工資）在較早的時(shí)間生效 They got a pay rise in March that was backdated to January . 他們3月份漲了工資，而實(shí)際加薪是從1月份算起的。 比較predate postdate (HAPPEN AFTER) 返回 backdate