It stands for something I "CC" in the mail?

Early to bed and early to rise is no problem、munejyuka。

Well, I guess it doesn't matter if you know or not.、I was a little curious, so I looked into it.。

I was wondering what "CC" is used in emails.。

It seems to be an abbreviation of Carbon Copy.。Apparently it comes from carbon paper that can be copied.。

I didn't know。I didn't even know that CC was abbreviated...I think I'll forget about it tomorrow...