如您在2011年12月20日的来信所说的翻译：As you said in the letter dated December 20, 2011 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

If you are in December 20, 2011 letter said

As you said in the letter dated December 20, 2011

If you said in December 20, 2011 incoming letter

If you get the December 20, 2011 said the letter

As you said in the letter dated December 20, 2011