index arbitrage

例句：

1. 1. The index arbitrage strategy has been proven to be highly profitable for investors.
   指数套利策略已被证明对投资者非常有利可图。
2. 2. In the stock market, arbitrage is often used to exploit price differences between different exchanges.
   在股票市场上，套利常常被用来利用不同交易所之间的价格差异。
3. 3. The arbitrageur was able to profit from the price discrepancies in the commodity market.
   套利者能够从商品市场的价差中获得利润。