当你意识到你在呼吸（我知道了不要只会说I）

老外是这么说“知道了”的：

I know.

I know what you mean.

I know what you're talking about.

I hear you.

I see what you're saying.

I see where you're coming from.

I understand what you're saying.

I got you.

I dig it.

Got it.=Gotcha.

Understood.

Point well taken.