This is the way FluentU works (https://www.fluentu.com/ https://www.fluentu.com/). They have content with 2-3 subtitle tracks that can be toggled on and off. Th

This is the way FluentU works (https://www.fluentu.com/ https://www.fluentu.com/). They have content with 2-3 subtitle tracks that can be toggled on and off. Then you can click on specific words in the subtitles that you don't know, it'll show a definition, and you can add it to a list of words to review. They've got several TV series (although they might not be your favorite series), depending on the language.