Google translate has a great feature where you can not only paste in your favorite text or url to some page in a foreign language, but you can display the translation in a "Side-by-Side View".
Here is an example of a bad translation. In case you do not read Vietnamese, one reason why it is a "bad" translation, is because it basically translates "Jesus loves me" into "I love Jesus", which, I'm sure, is funny for people with sick brains.
It appears that Google translate tries to remember your preferences as to "Side-by-Side View" or the default "Top-Bottom View", and I cannot figure out how to get a "Side-by-Side View" parameter in the urls here, so you will have to click the "Side-by-Side View" icon in the upper right hand side of the page.
Here is an example of a good or at least useful translation. It seems as though, the fewer words or ideas you have on each line, the more useful the translation is.