la costa

coast, shore

"La costa prometía calma y entregó gaviotas violentas."

The coast promised calm and delivered violent seagulls.

at the expense of, at the cost of

"Triunfó a costa de mi última silla."

He succeeded at the expense of my last chair.

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Your turn

Write a sentence with costa in it, whatever's on your mind.

It doesn't have to be perfect