How to translate words in a pdf document through a reader?

Question

Electronic books

I use the acrobat reader, I read a book on python in English, many words are clear, but still there are unfamiliar words. It is possible, while reading, to translate an incomprehensible word directly from the program, is there a plug-in. How to implement this on acrobat reader or fox reader. Thank you.

Answer 1

if the pdf document has a text layer, then translators like lingvo, GoldenDict will translate the word