Recently I took up several jobs as a translator. One of the first assignments, which I had to complete is to translate a website, its navigation and some articles.
Copying and pasting words in the dictionary for finding the right equivalents took a lot of my time before I found FoxLingo.
More about it:
English translation is a tough thing to do but this add-on really helped me to get the work done (it supports thousands of word combinations and over 31 language).