Tashanna sent in a link to an interesting mobile website that translates both ways between English and Chinese. I am surprised it was not released during the Olympics but I can still see it being useful. You may need to install the Chinese fonts on your Berry for this to display Chinese characters correctly. To the right you can see the description of a BlackBerry in Chinese.
Check it out at m.nciku.com from your BlackBerry browser.
If you want another alternative you can always try the free Jajah voice translations that we mentioned during the Olympics.