I knew Mr Smith long before I knew you.

早在认识你之前我就认识史密斯先生了。

youdao

Paris is a morgue without you: before I knew you, it was Paris, and I thought it heaven;

没有了你巴黎一片死气沉沉：认识你之前，巴黎还是那个巴黎，还是那个天堂一样的巴黎；

youdao

All the pictures that hang in my memory before I knew you have faded and given place to our radiant moments together.

我认识你之前的所有美好记忆已经变得黯然无色，取而代之的是我们在一起无比快乐的时光！

youdao

Before I even knew about you, I was waiting for you.

NEWYORKER: A Box of Puppies

And before I knew it, you know, when I'm graduating high school, I've been doing something that I loved since you know, I was seven years old and it basically cultivated a dream for me.

NPR: Acting Students Ready for Their Next Role

And that's why I am so thrilled to be here in Iowa tonight -- (applause) -- because long before most people even knew his name, you all saw what I saw.

WHITEHOUSE: The White House