なるほど

I see, so that's what it was...

I see, so that's how it looks/appears.

I see, that's truly a human-like way of thinking.

I see, so that's what it means./Ah, I get it now.

I see, so that's what it was...

I see, so that's what you mean.

I see, so you can use it in that way too.

I see, that is easy to understand.