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This formula is used to calculate the area of a circle. ☊ formula ☊
CO is the formula for carbon monoxide. ☊ formula ☊
They're trying to work out a peace formula acceptable to both sides in the dispute. ☊ formula ☊
All the patients were interviewed according to a standard formula. ☊ formula ☊
formula for sth/for doing sth: There's no magic formula for a perfect marriage. ☊ formula ☊
the secret formula for the blending of the whisky ☊ formula ☊