"a known quantity"
"the limits of the known world"
"a musician known throughout the world"
"a known criminal"
Billy Kellett?..He's known to the police.
出自: A. Christie
I was leaving surroundings where I had become known and was accepted.
出自: F. Howerd
His face was not recognised in the rogues' gallery, nor did his description tally with any known criminal.
出自: I. Drummond
There are 700 known species of holly in the world.
出自:Sunday Express