If you just want a simple translation we recommend MDBG it's FREE
Translate a word
Copy and paste the English or Chinese Character into the MDBG Dictionary
Translate a Sentence or Paragraph
Copy and past the English Sentence or Para into the 'Box' on the page.
Like all computer translations MDBG has its limitations, however it will generally give you a good idea.
Goolgle Translate which is also very good and FREE