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.
🗣️ 情景例句
This has been a hard course for me.
这门课对于我来说很难。
The fear of ill exceeds the ills we fear.
杞人忧天,庸人自扰。
And so do you, if you're afraid, and if the earthquake's a big one.