Safari Windows: Failure with Asian Text

Today, I tried to use Babel Fish (http://babelfish.yahoo.com) and translate from Japanese text from my friend.  I pasted the text "信頼できないかも" into the dialog in Safari 3.2.2, selected Japanese to English.  It looked pretty much like this:

Then I hit the translate text, and Apple's Safari converted the 2-byte Asian text to HTML encoding.  The result is garbage: 

I am not sure why Safari  would convert raw form data to HTML encoding, as this destroys the data.  It seems Safari is incapable to process Asian text (Unicode?) through at least form data.

I have no problem using either Internet Explorer 7 or Firefox 3.5.2.  I was hoping Safari 4 would be a good alternative browser, as IE is well known for so many security vulnerabilities, and Firefox is lately quite unstable.