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Explanation: Mesa de cambio es la instalación física del departamento de arbitrajes, es decir el departamento de un banco encargado de la compra y venta de divisas a contado y a plazo.
Se traduce como: foreign exchange desk.
Puedes encontrarla en el siguiente contexto tomado de un banco de la reserva federal:
"When a decision is made to support the dollar=s price against another currency, the foreign exchange trading desk of the New York Fed buys dollars and sells the foreign currency; conversely, to reduce the value of the dollar, it sells dollars and buys the foreign currency"