It seems like comments generated by flagging are not localized.
1) go on Русский язык stack exchange https://rus.stackexchange.com/
2) flag a question as a duplicate of some other question
3) see a comment like "does this answer your question [link to question]" instead of "вот этот вопрос похож на ваш [link to question]"
I haven't tried it, I just saw a comment in English.