Height is 'a function of' age in children. [=the height of children increases as their age increases]
His bad health has prevented him from being able to 'function' effectively in recent weeks.
Her chief/main/primary/principal 'function' is to provide expert legal advice.
(..) of the dark portal? You come back, and accused the Guardian... An entity from a time before the Kirin Tor existed. We think it serve the functions similar to that of the Guardian. No one beyond the arch council knows of it's existence, and it will stay that way. And you to mention it (..)2016 Warcraft