How to use "vast" in a sentence

One hundred years later, the Negro lives on a lonely island of poverty in the midst of a vast ocean of material prosperity

It has met every stress of vast expansion of territory, of foreign wars, of bitter internal strife, of world relations

The Lido was one of those incredibly lavish productions that could be seen nowhere in the world but Vegas, for it was only in Las Vegas that a multimillion-dollar show could be staged year after year with little concern for profit; such vast sums were spent on the elaborate sets and costumes, and on the enormous cast and crew, that the hotel was usually happy if the production merely broke even from ticket and drink sales

Tina felt as if they had talked without pause all evening, speaking with quiet urgency, as if each had a vast quantity of earthshakingly important information that he must pass on to the other before they parted

With more than a million full-time residents, with more than twenty million tourists a year, and with a vast desert on which to sprawl, Vegas offered thousands of dark, quiet corners where two people on the run could safely stop to catch their breath and settle upon a course of action.

Elliot swung the car around and started back toward the lights of the city, which spread like a vast, glowing fungus on the black desert plain.

She felt as if a vast unbridgeable gap separated her from people like these, and she wondered if she ever again would be as relaxed and free from care as these diners were at this moment.