Fix for Google Translator addon (broken API)
The addon stopped working because Google discontinued the google.com/async/translate endpoint it relied on, as well as the TKK token system used as fallback.
Solution: Use Debabelizer Translator

The best UI to translate unfamiliar word or phrase.

Finally an extension that can automatically translate the text and doesn't require to click something! I also love the ability to change the colors and overall the plethora of options!

5/5 for me!!!

Очень классный переводчик, мне очень нравится. Всем рекомендую

Leve, prática e não te faz perder o foco na leitura, além de ser bastante configurável.

Justamente por ter muitas configurações, tive pequenas dificuldades no cenário onde a língua do sistema(Linux) era justamente a de origem da tradução(En->Pt)

Great extension

Translation of a single word though double-click within any webpage. This option is genious!

Very good. Excellent

Excelente tradutor, eu recomendo...