The user interface of Google Translate for Opera can be displayed in more than 20 languages.
The language of the Google Translate interface can be changed on the fly; no browser's restart is needed.
Google Translate is the only one extension that allows you to modify its language interface in such an easy way. Just open Options and choose your preferred language from the upper drop-down list.
Another unique feature of the Google Translate localization is "choose and pick". For example, Google Translate in the Vietnamese language on the French version of Opera browser.
This may be very convenient in the case when you have guests from another country, or you cannot, for some reason, change the language of the Opera browser. Google Translate will change the language on the fly in one click.
Google Translate has been so far translated to 22 languages: English, Chinese, Czech, Dutch, Filipino, French, German, Greek, Hindi, Italian, Japanese, Korean, Polish, Portuguese, Romanian, Russian, Serbian, Spanish, Swedish, Turkish, Ukrainian and Vietnamese.
During the installation Google Translate sets the interface language based on Opera browser's language settings.
What's also unique is that if you set Google Translate language interface to your preferred language, and then change the language of the browser, the language of Translator won't change.