but you do want to read the contents of the source code, as it contains the content your looking for..
<span id="result_box" class="short_text" lang="bn"><span class="hps">আমি</span></span>
this is the node that contains the content of the translation…if you can build the url containing the un translated string, capture the response to that url and then find #result_box, you will have your content