This number shows that, perhaps, a corner has been turned.

The whole program has turned a corner. If people didn't know us before, they know us now.

I was waving but she had already turned the corner (at second).

I want to look at life - at the commonplaces of existence - as if we had just turned a corner and run into it for the first time

I believe we turned that corner several years ago.

Research in the past has wound up abusing, harming or hurting people. You want to stick to these regulations as carefully as possible, because they really make sure the welfare and interests of human subjects are protected.