翻译一个句子:读了这篇短文,我才知道.

I just know it after reading this article.

读了这篇短文,我才知道.

I did not know it until I had read this article.

i didn't know it until i read the article.

Read this short written work,I only then knew.

I just know it after reading this article.

Not until I read the article did I know it