These problems are not 'unique to' our city. [=these problems occur in other places and not only in our city]
She's in the 'unique' position of running for office against her husband.
Humans are 'unique' among mammals in several respects.
(..) yellow friend, I knew the chief would have to reconsider. He did not get where he is by ignoring a man's qualifications. He knows that I am unique, and therefore indispensable. We are much the same, the chief and I. But of course, Cato, all great detectives have one thing in common. (..)1975 The Return of the Pink Panther