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We've got a one-page, 10+ year old domain that has a 65/100 domain authority that gets about 10k page views a day (I'm happy to share the URL but didn't know if that's permitted). The content changes daily (it's a daily bible verse) so most of this question is focused on domain authority, not the content. We're getting ready to provide translations of that daily content in 4 languages.  Would it be better to create sub-domains for those translations (same content, different language) or sub-folders? Example: http://cn.example.com
http://es.example.com
http://ru.example.com or http://example.com/cn
http://example.com/es
http://example.com/ru We're able to do either but want to pick the one that would give the translated version the most authority both now and moving forward.  (We definitely don't want to penalize the root domain.) Thanks in advance for your input.