How can I change my sites local translate to my own settings

First of all, as a beginner, I’m sorry that I’m not familiar with the use of Discourse. There may be something that doesn’t meet the posting specification.
Then I want to ask, if I want to change the string in my forum, how can I set it? For example, Summary, I want to set it to another name. How can I set it?
I try to find some topics about this but only find this topic about plugin ( Add translation to a plugin - Docs - Discourse Meta

Customize all text in Discourse

Thank you so much!! It helps a lot!.BTW Is it possible to modify them in batches, such as using YML files to change them all?

Yes. In the Multilingual Plugin. Which is going through some changes presently so hold on a week or so …

Thank U!!!Really need that!