Something about her voice was vaguely familiar.

她的声音有点耳熟。

《牛津词典》

There was something vaguely familiar about him.

他身上有某些东西似曾相识。

《柯林斯英汉双解大词典》

There was something vaguely familiar about her face.

她有点儿面熟。

《牛津词典》

He was of the great and good, a type that was vaguely familiar to me.

NEWYORKER: Hand on the Shoulder

At times, the music feels like it's coming from some alternate yet vaguely familiar world.

WSJ: Fol Chen Reveals Its Faces | By Jim Fusilli

If you were paying attention during the presidential debates, this original Bowles-Simpson plan may sound vaguely familiar.

FORBES: Days Before Sequester, Bowles and Simpson Offer A Second Plan For Fiscal Sustainability