"It's simple arbitrage," said John as we perched on the end of his bed staring at the computer screen.

我们齐坐在约翰的床头，盯着电脑屏幕。

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Sixthly, To practice arbitrage on the basis of four boundary, we establish and close out positions by using simulated data, then compare the final return to simple arbitrage strategy's.

第六部分在模拟出来的数据的基础上根据四条边界进行套利交易，并将最终获取的收益与简单套利策略得到的收益进行比较。

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Under more normal financial conditions, the willingness of banks to engage in the simple arbitrage noted above will tend to limit the gap between the federal-funds rate and the rate the Fed pays on reserves.

WSJ: Bernanke Op-ed in WSJ: The Fed��s Exit Strategy