The first version of an additional tool is now available for advanced language students and professional translators. At translationexamples.com, you'll now find a translation example search engine that lets you search for examples of translations between various languages and English. At the moment, you can search for translations from French, Spanish, Portuguese, German and Dutch.
When you look up a word, you are presented with a list of sentences containing that word, plus English translations of those sentences. At present, the example translations are drawn from a bank of around 1,000,000 translated sentences from the Europarl corpus (a set of proceedings from the Euopean Parliament that, along with their corresponding translations, have been placed in the public-domain). It is likely that other corpora will be added in the near future.
Note that this example translations database should be seen as a complement to, rather than replacement for, the regular French dictionary.