Otherwise arbitrage opportunities would exist, and the result would be a leveling of relative prices and real currency valuations.
否则会有套利机会，结果就是重新调整相对价格，达到货币真实的估值。
2
At that time, the main currency for arbitrage transaction was yen, because the interest rate was low for yen then, and many objects of arbitrage transaction were AUD and NZD.
HFT firms which seek to exploit currency movements or arbitrage price differences between local-currency and foreign-currency bonds want to move funds in and out of a country with minimal friction.