WebClient DownloadString is not downloading content exactly same as the web page

I am trying to use google translate web page as below:

string url = String.Format("http://ift.tt/2gfR6P8");
WebClient webClient = new WebClient();
string result = webClient.DownloadString(url);

The problem is, when I look at google chrome developer tools, inspect elements, the actual page content is a little different from the downloaded string. I want to get alternate texts from google translate but webClient.DownloadString(url) does not download them.

Why are these two different, what can I do to download the web page content as I see on the browser?