refine

But crude futures can’t sustain a rally with heating-oil crack spreads—the difference between the price of a barrel of crude and that of the refined product—falling the way they are.

He turned to his close friend and frequent collaborator Johnson, who helped him sketch a concept that Kelly would refine into a design Ames approved.

The White House said those talks Sunday had resulted in an “updated and refined peace framework” but acknowledged that work still remained to reach a final agreement.

With pitches in Australia tougher than ever and the refined Kookaburra seaming more, driving is fraught with far more danger these days.

England don't need to worry about that now, it's about refining the little things that make you a top side.