How to correctly add the English version of the blog?

Question

JavaScript

Good afternoon.
I have a small blog on IT topics. I publish original content in Russian. I want to add an English version on a separate subdomain and publish translations of my own articles there. Please tell me a couple of things.
1. Do I need to somehow indicate to search engines that the article is a translation?
2. If so, does it matter what language the source is?
3. Is the translation of the article a separate unique text or will search engines consider them duplicates?
4. TIC and PR are common for subdomains or is it formed for each one?

Answer 1

Add class via settimeout function

Answer 2

JavaScript:
jQuery:
jQuery('#id').addClass('myClass');

Answer 3

And addClass in jQuery is not like?
https://api.jquery.com/addclass/

Answer 4

1. No
2. -
3. Is unique
4. For subdomains - each has its own TIC and PR.

Answer 5

If there is a page in multiple languages, it is recommended to use the rel="alternate" hreflang="x" attribute .
In order not to copy the entire help, here is the link - https://support.google.com/webmasters/answer/18907...