查词历史：
- backdating backdated backcourt backbone
v.
1.
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.
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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。
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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。
