
Microsoft today announced that the company has integrated Translator into Cortana in Windows 10. With the latest addition to Cortana, you can easily translate something. For example:
◾ “Hey Cortana, translate where is the nearest taxi stand in French?”
◾ “Hey Cortana, how to say where is the closest grocery store in Spanish?”
Here is a list of all of the translation languages currently supported by Cortana:

Cortana was able to translate a phrase to French for me – however, sometimes, it may misunderstand you and if it can’t translate something, it’ll open up Bing and do a web search. Nonetheless, this is indeed a pretty nice addition to Cortana. However, keep in mind that it’s only available to Windows 10 users in the US for now.
source:microsoft-news