Seems like a good time to plug my project https://lazybug.ai perhaps it could a bit with Three-Body. It has interactive subtitles for that show in particular (https://lazybug.ai/player/threebodytencent/1/1) and many others that I've extracted with purpose-built OCR. It's 100% free and open source, runs client-side but with free server syncing of your data, with the obligatory Anki export.
Most of the shows on the list are ones I've seen recommended by others at some point, so perhaps if Three-Body is too tricky there you could find some inspiration there
Most of the shows on the list are ones I've seen recommended by others at some point, so perhaps if Three-Body is too tricky there you could find some inspiration there