The Duffins arrived early at the reunion, each carrying a dish to share.

Duffin arrived early at the genealogy meeting to share stories of his ancestors.

At the weekend market, families queued for warm duffins topped with cinnamon sugar.

At the street fair, I couldn't resist buying a warm duffin filled with cinnamon sugar.

In the alleyway, she was duffing the mugger with a broken chair until the police arrived.

Duffing's analysis revealed unexpected resonances in the nonlinear oscillator.

Duffing equations are frequently used to model nonlinear oscillators in mechanical and electrical systems.

When studying chaotic behavior in mechanical systems, engineers often analyze the Duffing equation to predict bifurcations and strange attractors.