It is the best translation extension , it provide the translation of each clause of the text in the same page , it provide the meaning of each word you assign and click on the emerging slogan of Relingo which is the character R , It gives you examples demonstrating the meaning of the word and their translation in your own language, it provide dual subtitles of online videos , the video language and the translation in your mother tongue , make sure there is no similar extensions activated to prevent confusion , i think Relingo is best aid at all in your journey of mastering English.