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.

当时进行套利交易的货币主要是日元，因为当时日元的利率很低，有很多套利交易的标的是澳大利亚元和新西兰元。

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The broader policy goal also has a more practical function in reducing currency exposure and transaction costs for Chinese exporters.

这个更广泛的政策目标对降低中国出口企业的外汇风险敞口和交易成本则有着更为现实的作用。

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Another option is to have scrip exist as an external currency and to have each transaction manifest in the gamer's external account.

另一种方法是，将通货实现为外部货币，每次交易都记录在玩家的外部帐号中。

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Our central bank still hasn't grasped that the greenback is the unofficial transaction currency of numerous nations.

FORBES: Fact and Comment

Rather than bringing criminal charges based on a specific underlying transaction in which a bank or other financial institution failed to file a Currency Transaction Report or Suspicious Activity Report, federal prosecutors are charging financial institutions with an overall failure to maintain an effective program to prevent money laundering.

FORBES: Financial Institutions: How Much More Will You Have to Spend on Anti-Money Laundering Programs to Avoid Criminal Prosecution?

We can look at various things here: for example, how important are currency transaction costs as a limitation upon trade?

FORBES: Aussie $ and NZ $ To Merge? Discussing a Trans Tasman Currency