She struggled with depression for years, but she's more 'centered' now and able to live a full life.
The investigation has 'centered' [='focused'] mainly 'on/upon' the alleged misuse of public funds.
She 'centers' her life 'on/around' her children. = Her life is 'centered on/around' her children.
(..) No, why would they? Let's try a new position. Right, there. The neuronal sensors are correct, because it works. The neurons are all centered. Maybe the inhibitors failed. Mr. Dyson? The materials team. . . ...is running another series this afternoon, and you have to. . . (..)1991 Terminator 2: Judgment Day