YOU SAID:

You don’t know if I know her?

INTO JAPANESE

私は彼女を知っているか分からない?

BACK INTO ENGLISH

I know I know her?

INTO JAPANESE

私は彼女を知っている知っているか。

BACK INTO ENGLISH

I know she knows.

INTO JAPANESE

知ってるわ

BACK INTO ENGLISH

- He's a famous physicist.

INTO JAPANESE

知ってるわ

BACK INTO ENGLISH

- He's a famous physicist.