大约在一到两个月以前，我曾经给你们发过一次信的翻译：About a single-day period previously, I had to send you a letter 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

About one to two months ago, I have had a letter sent to you

About a single-day period previously, I had to send you a letter

Approximately in one to two months, I have sent a letter to you

In about one to two months ago, I have addressed to you has made one letter

About a single-day period previously, I had to send you a letter