没拿到保单是正本单据还没有寄出的因,而明天能寄出是因为明天能拿到保单的果.所以最好采取下面的翻译方法：
The original documents have not been sent out yet,because we didn't get the original insurance policy.We will send them to you tomorrow,as they will be ready by then.Thank you for your understanding!