I have found an interesting paper which is very relevant to my research. After reading the abstract in English, I would like to continue to read through the methodology and its discussions. However, only the abstract is available in English, and the content is in another language which I don't know.
I really want to read through the content as some of the figures are very interesting to me. I have tried to translate it using Google Translate, but it is very difficult to understand.
Is it appropriate to send a polite email to the author, asking for a translation of your paper in English? Does the author have the obligation to do so?