first-hand knowledge

"Do you know of your own first-hand knowledge that I spend my life running after women?"

She was the only one with first-hand knowledge of the interior.

His desire to keep the board united may come from first-hand knowledge of how independent committees can work.

Unfortunately, in this respect our participants had little first-hand knowledge of teachers who provided such a balance.

Get first-hand knowledge of a local area by asking small businesses that work there.

Suddenly the parents are drawn into the activity and gain some first-hand knowledge of something their child may spend many hours doing.

"No one really knows why he's still in prison," said a Chinese with first-hand knowledge of the case.

I'm speaking from first-hand knowledge, being the father of a 10-month-old.

He said American has no first-hand knowledge of the strike authorization vote.

To get some first-hand knowledge of what the project has accomplished.