backdate是什么意思？

backdate

英[ˌbækˈdeɪt] 美[ˈbækˌdet]

• vt. 倒填日期，使（付款等）在较早的日期开始生效；

第三人称单数：backdates;

过去式：backdated;

过去分词：backdated;

现在分词：backdating;

例句

• Backdate your invoice to April 1 st. 你的发票日期应填到4月1日算起.
• Anyone who has overpaid tax will be able to backdate their claim to last April. 超额纳税者申领退款可以从去年4月算起。

柯林斯高阶英汉双解学习词典释义

• VERB
  追溯；使（从过去某个日期）开始生效
  If a document or an arrangement is backdated, it is valid from a date before the date when it is completed or signed.
  例句
  The contract that was signed on Thursday morning was backdated to March 11... 周四早上签订的合同实际生效日期追溯到3月11日。 Anyone who has overpaid tax will be able to backdate their claim to last April. 超额纳税者申领退款可以从去年4月算起。

英英词典释义

• Verb
  1. make effective from an earlier date;
  "The increase in tax was backdated to January"