know of
US /noʊ ʌv/
UK /noʊ ʌv/

1.
知道, 聽說過
to be aware of someone or something, often without having detailed knowledge
:
•
Do you know of any good restaurants nearby?
你知道附近有什麼好餐館嗎?
•
I only know of him by reputation, I've never met him.
我只知道他的名聲,從未見過他本人。