Backdated
v. 倒填日期( backdate的过去式和过去分词 ); 使（付款等）在较早的日期开始生效
🗣️ 情景例句
if it's all right with your dad.
假如你爸爸答应的话。
I'd rather dream than study my chemistry.
我还是做我的梦，总比研究化学好。
The tunnel would be well-ventilated if tall chimneys were built above sea level.
隧道就具备了良好的通风条件。